{"title":"PFA and PTFE Anti-corrosion Ball Valve | Concentrated Acids and Strong Oxidizers","description":"\u003ch2\u003ePFA and PTFE Lined Anti-Corrosive Ball Valves — The Most Resistant Chemical Barrier for Extremely Aggressive Fluids\u003c\/h2\u003e\n\n\u003cp\u003e\n  In the hierarchy of chemical resistance for industrial valves, \u003cstrong\u003ePFA (Perfluoroalkoxy)\u003c\/strong\u003e and \u003cstrong\u003ePTFE (Polytetrafluoroethylene)\u003c\/strong\u003e linings occupy the highest level: they are the only lining materials that simultaneously and continuously resist the combination of high-concentration mineral acids, strong alkalis, potent oxidizers, halogens, and practically any corrosive fluid in the chemical industry — with the sole exceptions of elemental fluorine, chlorine trifluoride, and molten alkali metals. When 316 stainless steel fails due to pitting in weeks, when PVC dissolves in minutes, and when an anti-corrosive butterfly valve with a molded PTFE liner is insufficient due to its lining's joint lines, the anti-corrosive ball valve with continuous PFA or PTFE lining is the solution.\n\u003c\/p\u003e\n\u003cp\u003e\n  The critical difference between an anti-corrosive ball valve and a SS316 or anti-corrosive butterfly valve with a liner is the \u003cstrong\u003econtinuous, seamless lining\u003c\/strong\u003e: instead of covering only the most exposed internal parts, PFA or PTFE covers absolutely all surfaces in contact with the fluid — the inner body, ball, seats, and the ends of the connections up to the flange face or the start of the thread. There is not a single square centimeter of metal exposed to the fluid. This design eliminates the penetration points that characterize linings with joints or simple PTFE seats in conventional ball valves.\n\u003c\/p\u003e\n\n\u003ch3\u003ePFA vs. PTFE — Differences That Matter in Selection\u003c\/h3\u003e\n\u003cp\u003e\n  Although both are fluoropolymers with maximum chemical resistance, PFA and PTFE have constructive and property differences that determine which is correct for each application:\n\u003c\/p\u003e\n\n\u003ch4\u003ePFA (Perfluoroalkoxy)\u003c\/h4\u003e\n\u003cp\u003e\n  PFA is the highest quality fluoropolymer for linings in process valves. Its fundamental characteristic is that it can be applied as an \u003cstrong\u003einjection molded\u003c\/strong\u003e lining — PFA is injected into a mold around the metallic valve body, forming a continuous and perfectly adhered layer without joint lines, without pores, and without interruptions. The ball of the PFA ball valve is a metallic ball completely encapsulated in molten PFA — the metal never touches the fluid.\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical Resistance:\u003c\/strong\u003e The highest available in industrial practice. Compatible with practically all acids, alkalis, oxidizers, and solvents — including fluids that attack conventional PTFE due to its joint lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Joints or Penetration Lines:\u003c\/strong\u003e The PFA lining is continuous and impermeable — unlike molded PTFE liners that have joint lines where highly aggressive fluid can penetrate over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -30 °C to +150 °C in continuous service; peaks up to 180 °C.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransparency:\u003c\/strong\u003e PFA is semi-transparent — allowing visual inspection of the internal condition of the lining without disassembly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePermeability:\u003c\/strong\u003e Practically impermeable to gases and liquids — PFA does not allow the diffusion of aggressive fluid to the underlying metal even in prolonged service.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMain Application:\u003c\/strong\u003e Fluids of maximum chemical aggressiveness, long-term continuous service, applications where the integrity of the uninterrupted lining is critical.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003ePTFE (Polytetrafluoroethylene)\u003c\/h4\u003e\n\u003cp\u003e\n  PTFE is the classic fluoropolymer, the best known in the industry. In ball valves, PTFE is used both as a body lining material (machined solid liner) and as a material for seats and balls in valves constructed entirely of PTFE. Unlike PFA, which is injection molded, PTFE in valve linings is usually manufactured as a machined solid part that is inserted into the metallic body.\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical Resistance:\u003c\/strong\u003e Identical to PFA in the compatibility range — both fluoropolymers have the same intrinsic chemical resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstructional Difference:\u003c\/strong\u003e Machined PTFE lining can have joint lines and mechanical fittings where highly aggressive fluid could penetrate over time — molten PFA does not have this problem.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigher Hardness:\u003c\/strong\u003e Solid machined PTFE is harder and more resistant to mechanical abrasion than molten PFA lining — advantageous in fluids with particles or suspended solids.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -200 °C to +260 °C — slightly higher range than PFA.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMain Application:\u003c\/strong\u003e Very aggressive fluids where the mechanical resistance of the lining is also a factor, valves with solid PTFE balls, cryogenic applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen is a PFA Anti-Corrosive Ball Valve the Only Correct Option?\u003c\/h3\u003e\n\u003cp\u003e\n  There are specific fluids that destroy all other valve alternatives available on the market, but do not affect PFA or PTFE. The PFA anti-corrosive ball valve is the \u003cstrong\u003emandatory\u003c\/strong\u003e (not optional) choice when the fluid is one of the following:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eHydrofluoric Acid (HF) — any concentration:\u003c\/strong\u003e HF is the most corrosive fluid in the chemical industry for metals and glass. 316 stainless steel would corrode in hours. PVC and CPVC deteriorate. PTFE and PFA are the only materials resistant to HF in all its concentrations and process temperatures. The PFA-lined ball valve is the standard solution in HF lines in the petrochemical industry (HF alkylation), surface treatment, and fluoride production.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eChlorine Dioxide (ClO₂) — in bleaching concentrations:\u003c\/strong\u003e ClO₂ is the most aggressive oxidizer used in the paper industry for ECF bleaching. 316 stainless steel suffers severe pitting corrosion in weeks at bleaching concentrations (5–20 g\/L). The anti-corrosive butterfly valve with a molded PTFE liner has vulnerable joint lines. The ball valve with continuous seamless PFA lining is the correct solution for ClO₂ lines in paper mills.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eConcentrated Sulfuric Acid (H₂SO₄ \u0026gt;70%):\u003c\/strong\u003e Diluted H₂SO₄ can be handled with SS316 or PVC under controlled conditions, but concentrated H₂SO₄ (oleum, fuming H₂SO₄, H₂SO₄ \u0026gt;70%) is incompatible with stainless steel and most non-fluorinated polymers. PTFE and PFA are compatible with H₂SO₄ at any concentration up to boiling point.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eConcentrated Hydrochloric Acid (HCl \u0026gt;35%):\u003c\/strong\u003e Concentrated HCl attacks stainless steel even at room temperature due to the combination of extreme acidity and chlorides. PVC ball valves are compatible up to ~35% HCl, but for higher concentrations or elevated temperatures, PFA is the only safe option.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eConcentrated Hydrogen Peroxide (H₂O₂ \u0026gt;30%):\u003c\/strong\u003e Concentrated H₂O₂ is a strong oxidizer that rapidly degrades conventional elastomers (EPDM, NBR) and attacks stainless steel at high concentrations. PTFE and PFA are the only polymers completely resistant to H₂O₂ in all its concentrations.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eConcentrated Nitric Acid (HNO₃ \u0026gt;65%):\u003c\/strong\u003e At high concentrations, HNO₃ is a strong oxidizer that attacks stainless steel and degrades most polymers. PFA and PTFE are resistant to HNO₃ in all its concentrations.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eMixtures of Acids and Oxidizers:\u003c\/strong\u003e Aqua regia (HNO₃ + HCl), mixtures of halogenated acids, mixed solutions of strong oxidizers. PFA is practically the only lining material that resists these mixtures.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eSulfuric Acid Electrolyte in Electrolysis Cells (SX-EW):\u003c\/strong\u003e The electrolyte in copper electrodeposition cells contains H₂SO₄ at 150–200 g\/L plus copper ions, manganese, and other metallic impurities. This mixture is incompatible with stainless steel and requires PFA-lined valves.\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction of the Anti-Corrosive Ball Valve\u003c\/h3\u003e\n\u003cp\u003e\n  The anti-corrosive ball valve with PFA or PTFE lining has a specific construction that ensures no metallic parts are exposed to the aggressive fluid:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eBody:\u003c\/strong\u003e Carbon steel or 316 stainless steel as a mechanical support structure — the metal provides pressure resistance and structural rigidity. The PFA or PTFE lining completely protects the interior of the body from contact with the fluid.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eInner Lining:\u003c\/strong\u003e PFA or PTFE applied over the entire internal surface of the body, including the faces of the connection flanges up to the joint with the flange gasket. The lining thickness is sufficient to ensure no diffusion of the fluid to the underlying metal throughout the valve's service life.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eBall:\u003c\/strong\u003e Metallic ball completely encapsulated in PFA or with PTFE coating — the metal of the ball does not contact the fluid in any position. In some models, the ball is made of machined solid PTFE without a metallic core.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eSeats:\u003c\/strong\u003e Virgin PTFE — PTFE seats provide hermetic sealing between the ball and the lined body. The PTFE of the seats is compatible with all fluids that the PFA body lining resists.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eStem:\u003c\/strong\u003e 316 stainless steel with PTFE packing that seals the stem from the body — the only potential point of contact between the metal stem and the fluid is sealed by the PTFE packing. In the most critical models, the stem is also PFA-lined up to the packing.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eConnections:\u003c\/strong\u003e ANSI 150 or 300 flanges (carbon steel or SS316 as structure) with PFA lining up to the flange face, or NPT threaded connections with lining in the first threads. Flange gaskets are made of virgin PTFE or graphite depending on the fluid.\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLining Material:\u003c\/strong\u003e PFA (Perfluoroalkoxy) or PTFE (Polytetrafluoroethylene) depending on model\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Structure:\u003c\/strong\u003e Carbon steel or SS316 — not in contact with the fluid\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBall:\u003c\/strong\u003e Metallic encapsulated in PFA, or machined solid PTFE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeats:\u003c\/strong\u003e Virgin PTFE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStem:\u003c\/strong\u003e SS316 with PTFE packing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSealing:\u003c\/strong\u003e Hermetic in both flow directions — no detectable leaks\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e ANSI 150 and ANSI 300 flanges, and NPT thread depending on model\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Diameters:\u003c\/strong\u003e DN15 (½\") to DN100 (4\") in standard models; larger sizes upon request\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Pressure:\u003c\/strong\u003e Up to PN16 \/ ANSI 150 in most models — maximum pressure is limited by the lining, not by the metallic structure\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -30 °C to +150 °C with PFA lining; up to +200 °C with PTFE in specific models\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical Compatibility:\u003c\/strong\u003e Universal for acids, alkalis, oxidizers, and solvents — with the sole exceptions of elemental fluorine, chlorine trifluoride, and molten alkali metals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e Full or reduced depending on model and diameter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperation:\u003c\/strong\u003e Manual with lever; automatable with pneumatic or electric actuator\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eChemical Compatibility Table — Most Frequent Fluids\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eFluid\u003c\/th\u003e\n      \u003cth\u003eSS316\u003c\/th\u003e\n      \u003cth\u003ePVC\u003c\/th\u003e\n      \u003cth\u003ePTFE Liner Butterfly\u003c\/th\u003e\n      \u003cth\u003ePFA\/PTFE Ball\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHF (any concentration)\u003c\/td\u003e\n      \u003ctd\u003e❌ Hours\u003c\/td\u003e\n      \u003ctd\u003e❌ Days\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Joint penetration\u003c\/td\u003e\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eH₂SO₄ \u0026gt;70%\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Joint penetration\u003c\/td\u003e\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHCl \u0026gt;35%\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Limit\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eClO₂ \u0026gt;5 g\/L\u003c\/td\u003e\n      \u003ctd\u003e❌ Severe pitting\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Joint penetration\u003c\/td\u003e\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eH₂O₂ \u0026gt;30%\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHNO₃ \u0026gt;65%\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eAqua Regia (HNO₃+HCl)\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePhosphoric Acid H₃PO₄ \u0026gt;85%\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConcentrated Ketones (acetone, MEK)\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eChlorinated Solvents (DCM, TCE)\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNaOH \u0026gt;50%\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eLiquid Bromine Br₂\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n      \u003ctd\u003e✅\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eElemental Fluorine F₂\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e❌\u003c\/td\u003e\n      \u003ctd\u003e❌ No standard viable material\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMonoblock vs. Three-Piece Design\u003c\/h3\u003e\n\u003cp\u003e\n  Anti-corrosive ball valves are available in two constructive designs with distinct implications for maintenance:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eMonoblock (One-Piece Body):\u003c\/strong\u003e The valve body is a single piece with the continuous PFA lining applied at the factory. It cannot be opened to access the seats or the ball without destroying the lining. This is the design with the highest chemical integrity — no mechanical body joints that could be leak points. The only way to perform internal maintenance is to replace the entire valve.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eThree-Piece Body:\u003c\/strong\u003e The body has three detachable sections that allow access to the ball and seats for inspection and replacement without removing the valve from the line. Field maintenance is possible but requires ensuring the integrity of the lining at the joint planes of the three pieces. Preferred in larger diameters where the cost of replacing the entire valve is significant.\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAutomation of the PFA Anti-Corrosive Ball Valve\u003c\/h3\u003e\n\u003cp\u003e\n  The PFA anti-corrosive ball valve can be automated with pneumatic or electric actuators using a standard ISO 5211 interface. Specific considerations for very aggressive fluids:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eActuator Material:\u003c\/strong\u003e In environments with strong acid vapors (HF, concentrated HCl, H₂SO₄), the anodized aluminum of the standard actuator body can corrode over time. Specify actuators with stainless steel housings or with high chemical resistance epoxy coating when the installation environment has aggressive acid vapors.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eSingle-Acting NC for Hazardous Fluids:\u003c\/strong\u003e For valves in HF, ClO₂, or other highly hazardous fluid lines, the normally closed (NC) fail-safe configuration ensures that in the event of any control system or air supply failure, the valve closes by mechanical spring and interrupts the flow of the hazardous fluid. This is the correct safety configuration in most applications with extremely aggressive or toxic fluids.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eATEX Classified Zones:\u003c\/strong\u003e In chemical plants where the presence of flammable vapors classifies the area as Zone 1 or Zone 2, specify a control solenoid with ATEX marking. The pneumatic actuator itself does not require ATEX certification as it has no electrical components — only the control solenoid needs to be ATEX.\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMain Industries and Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eChemical Industry — Concentrated Acids:\u003c\/strong\u003e Production and distribution of HF, H₂SO₄, HCl, HNO₃, and their mixtures in inorganic acid plants. Synthesis of fluorinated, chlorinated, and brominated compounds. Production of fertilizers (single and triple superphosphate, phosphoric acid). The PFA ball valve is the standard isolation component in these lines.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003ePetrochemicals — HF Alkylation:\u003c\/strong\u003e Alkylation units in refineries that use HF as a catalyst have hydrofluoric acid lines that require PFA-lined ball valves at all isolation and control points. There is no viable alternative to this material for liquid HF service under pressure.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003ePulp and Paper — ClO₂ Bleaching:\u003c\/strong\u003e ECF bleaching stages with chlorine dioxide in concentrations of 5–20 g\/L require PFA ball valves. SS316 fails due to pitting in weeks at these concentrations — the anti-corrosive butterfly valve with molded PTFE liner can suffer ClO₂ penetration through the liner's joint lines. The PFA ball valve with continuous seamless lining is the only reliable long-term solution.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eMining — SX-EW Electrolyte:\u003c\/strong\u003e The copper electrodeposition circuit (SX-EW) uses H₂SO₄ at 150–200 g\/L as an electrolyte, which is incompatible with SS316. PFA ball valves are the standard for electrolyte lines in copper electrolysis cells in Sonora, Chihuahua, and San Luis Potosí.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eWater Treatment — ClO₂ Disinfection:\u003c\/strong\u003e Modern water treatment plants that use chlorine dioxide as a primary disinfectant require PFA anti-corrosive valves in the generation and distribution lines of pure ClO₂ before its dilution to the treatment level.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eSemiconductors and Microelectronics:\u003c\/strong\u003e Manufacturing of integrated circuits and flat panel displays with acid etching processes (HF, HNO₃, acid mixtures). PFA ball valves are the standard in the semiconductor industry due to their purity (no metallic extractables that would contaminate substrates) and their resistance to process acids.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003ePharmaceuticals — API Synthesis with Strong Acids:\u003c\/strong\u003e The synthesis of some active pharmaceutical ingredients (APIs) involves reaction or purification stages with concentrated HCl, HNO₃, or acid mixtures. PFA ball valves cover these services by combining acid resistance with material purity (no extractables).\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility Verification — How Cematic Advises\u003c\/h3\u003e\u003cp\u003e\n  Selecting the correct anti-corrosion valve for a specific fluid requires knowing three simultaneous parameters: the exact concentration of the fluid, the operating temperature, and the presence of other components in the solution. A change in any of these three parameters can completely change compatibility. At Cematic:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ We verify the compatibility of the PFA or PTFE lining for your specific fluid with the chemical resistance tables from the lining manufacturers before quoting\u003c\/li\u003e\n  \u003cli\u003e✅ We identify whether PFA is necessary or if the molded PTFE-lined butterfly valve is sufficient for your specific process conditions — avoiding over-specification when not necessary\u003c\/li\u003e\n  \u003cli\u003e✅ We advise when no standard polymer (neither PFA nor PTFE) is compatible with the fluid — so that the project can evaluate alternative materials such as PVDF, Hastelloy, or niobium\u003c\/li\u003e\n  \u003cli\u003e✅ We advise on the correct material for the actuator when the installation environment has aggressive fluid vapors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n  Share the name of the fluid, its concentration, and operating temperature with us via WhatsApp or at ventas@cematic.com and receive compatibility verification free of charge on the same business day.\n\u003c\/p\u003e\n\n\u003ch3\u003eWhy choose Cematic for your anti-corrosion ball valves?\u003c\/h3\u003e\n\u003cp\u003e\n  We have available stock in Mexico City for the most demanded diameters of flanged and threaded PFA anti-corrosion ball valves. We advise on the selection of the correct design (monobloc vs. three-piece, PFA vs. PTFE, flange vs. thread) according to the fluid, pressure, and maintenance requirements of your installation. For applications with highly hazardous fluids such as HF or ClO₂, we review the complete specification of the valve + actuator + solenoid assembly to ensure that no component of the system is vulnerable to the fluid or its vapors. Technical quote on the same business day. Shipments to the entire Mexican republic, including remote mining and industrial areas. Contact us via WhatsApp or at ventas@cematic.com.\n\u003c\/p\u003e","products":[{"product_id":"valvula-bola-anticorrosiva-pfa-wcb-ansi-150","title":"WCB Anti-Corrosive Ball Valve | PFA Lined | ANSI 150 | Acids and Oxidizers","description":"\u003ch2\u003eCorrosion-Resistant Ball Valve — WCB Body with Integral PFA Lining, ANSI 150 Flange\u003c\/h2\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003ePFA-lined corrosion-resistant ball valve\u003c\/strong\u003e is the isolation solution for the most aggressive fluids in the chemical industry: hydrofluoric acid, concentrated hydrochloric acid, high-concentration sulfuric acid, chlorine dioxide, concentrated hydrogen peroxide, and any fluid that would destroy stainless steel, PVC, or non-fluorinated polymers in days or weeks. The \u003cstrong\u003ePFA (Perfluoroalkoxy)\u003c\/strong\u003e lining continuously and seamlessly covers absolutely all internal surfaces in contact with the fluid: body, cover, gland box, and ball with stem — all metal components are PFA-lined, leaving no metal surface exposed to the corrosive fluid.\n\u003c\/p\u003e\n\u003cp\u003e\n  The WCB carbon steel structure provides the mechanical strength to withstand ANSI 150 pressures (up to 290 psi \/ 20 bar), while the PFA acts as an impermeable chemical barrier between the metal and the fluid. Available in sizes from 1\" to 4\" with ANSI 150 flanges and ISO 5211 mounting pad for automation.\n\u003c\/p\u003e\n\n\u003ch3\u003ePFA — the strongest chemical barrier available in standard valves\u003c\/h3\u003e\n\u003cp\u003e\n  \u003cstrong\u003ePFA (Perfluoroalkoxy)\u003c\/strong\u003e is the fluoropolymer with the highest chemical resistance available for industrial valve linings. Its advantage over conventional PTFE is not in intrinsic chemical resistance — both are fluoropolymers with virtually universal resistance — but in how it is applied:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eInjection molded lining — no joints or porosities:\u003c\/strong\u003e PFA is applied in a molten state and molded directly onto the metal substrate, creating a continuous, perfectly adhered layer with no joint lines, seams, or porosities. The result is a completely impermeable barrier — the aggressive fluid cannot penetrate to the underlying metal even with prolonged service.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eIntegral coverage of all components:\u003c\/strong\u003e Unlike valves where only the body has a PTFE liner but the ball is exposed SS316, in this valve \u003cstrong\u003eall fluid-contacting components are PFA-lined\u003c\/strong\u003e: body (component 9), cover (component 12), gland box (component 7), and ball\/stem (component 11). There is no point where the fluid can reach the metal — in any open or closed position.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eSemi-transparent — visual inspection possible:\u003c\/strong\u003e PFA is semi-transparent, which in many cases allows for visual inspection of the lining condition without disassembly — detecting blistering or delamination before it causes a leak.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eValve components — complete material table\u003c\/h3\u003e\n\u003ctable\u003e\n\n  \u003cthead\u003e\n\n    \u003ctr\u003e\n\n      \u003cth\u003eNo.\u003c\/th\u003e\n\n      \u003cth\u003eComponent\u003c\/th\u003e\n\n      \u003cth\u003eMaterial\u003c\/th\u003e\n\n      \u003cth\u003eFluid Contact\u003c\/th\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/thead\u003e\n\n  \u003ctbody\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e1\u003c\/td\u003e\n\n      \u003ctd\u003eNut\u003c\/td\u003e\n\n      \u003ctd\u003eA194 2H\u003c\/td\u003e\n\n      \u003ctd\u003eNo\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e2\u003c\/td\u003e\n\n      \u003ctd\u003eLever\u003c\/td\u003e\n\n      \u003ctd\u003eA216 WCB\u003c\/td\u003e\n\n      \u003ctd\u003eNo\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e3\u003c\/td\u003e\n\n      \u003ctd\u003eLock Plate\u003c\/td\u003e\n\n      \u003ctd\u003eSS304\u003c\/td\u003e\n\n      \u003ctd\u003eNo\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e4\u003c\/td\u003e\n\n      \u003ctd\u003eBody Bolt\u003c\/td\u003e\n\n      \u003ctd\u003eA193 B7\u003c\/td\u003e\n\n      \u003ctd\u003eNo\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e5\u003c\/td\u003e\n\n      \u003ctd\u003eGland Follower\u003c\/td\u003e\n\n      \u003ctd\u003eA216 WCB\u003c\/td\u003e\n\n      \u003ctd\u003eNo\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e6\u003c\/td\u003e\n\n      \u003ctd\u003ePacking\u003c\/td\u003e\n\n      \u003ctd\u003ePTFE\u003c\/td\u003e\n\n      \u003ctd\u003eNo\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e7\u003c\/td\u003e\n\n      \u003ctd\u003eGland Box\u003c\/td\u003e\n\n      \u003ctd\u003eA216 WCB + PFA Lining\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Yes — PFA lined\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e8\u003c\/td\u003e\n\n      \u003ctd\u003eBody Bolt\u003c\/td\u003e\n\n      \u003ctd\u003eA193 B7\u003c\/td\u003e\n\n      \u003ctd\u003eNo\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e9\u003c\/td\u003e\n\n      \u003ctd\u003eBody\u003c\/td\u003e\n\n      \u003ctd\u003eA216 WCB + PFA Lining\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Yes — PFA lined\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e10\u003c\/td\u003e\n\n      \u003ctd\u003eSeat\u003c\/td\u003e\n\n      \u003ctd\u003ePTFE\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Yes — virgin PTFE\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e11\u003c\/td\u003e\n\n      \u003ctd\u003eBall \/ Stem\u003c\/td\u003e\n\n      \u003ctd\u003eA216 WCB + PFA Lining\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Yes — PFA lined\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e12\u003c\/td\u003e\n\n      \u003ctd\u003eCover\u003c\/td\u003e\n\n      \u003ctd\u003eA216 WCB + PFA Lining\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Yes — PFA lined\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\u003cp\u003e\n  \u003cstrong\u003eConclusion:\u003c\/strong\u003e The four fluid-contacting components (body, cover, gland box, and ball\/stem) are PFA-lined. The seat is virgin PTFE. \u003cstrong\u003eNo metal surface is exposed to the fluid under any operating condition.\u003c\/strong\u003e\n\u003c\/p\u003e\n\n\u003ch3\u003eWhen is the PFA corrosion-resistant ball valve the only correct option?\u003c\/h3\u003e\n\u003cp\u003e\n  Some fluids destroy all other valve alternatives on the market except PFA and PTFE. This valve is mandatory (not optional) when the fluid is:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eHydrofluoric acid (HF) — any concentration:\u003c\/strong\u003e HF is the most corrosive fluid in the chemical industry for metals and glass. SS316 would corrode in hours. PFA is one of the only materials resistant to HF at all concentrations. Applications: HF alkylation units in refineries, fluoride production, surface treatment.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eChlorine dioxide (ClO₂):\u003c\/strong\u003e The most aggressive oxidant in the paper industry. SS316 suffers severe pitting within weeks at bleaching concentrations. Continuous, seamless PFA lining is the correct solution.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eSulfuric acid H₂SO₄ \u0026gt;50%:\u003c\/strong\u003e Concentrated H₂SO₄ attacks SS316 and PVC. PFA is compatible at any concentration up to boiling point.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eHydrochloric acid HCl \u0026gt;35%:\u003c\/strong\u003e At high concentrations and elevated temperatures, HCl attacks even SS316. PFA resists at all concentrations.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eHydrogen peroxide H₂O₂ \u0026gt;30%:\u003c\/strong\u003e Strong oxidant that degrades conventional elastomers and attacks SS316 at high concentrations.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eAqua regia (HNO₃ + HCl) and acid mixtures:\u003c\/strong\u003e The most aggressive mixtures in industrial chemistry — PFA is practically the only lining material that resists these combinations.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eSX-EW cell electrolyte (H₂SO₄ + metal ions):\u003c\/strong\u003e Copper electrowinning electrolyte in mining contains 150–200 g\/L H₂SO₄ plus aggressive ions — incompatible with SS316.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eType:\u003c\/strong\u003e Quarter-turn floating ball\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody Design:\u003c\/strong\u003e Two-piece body\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e A216 WCB + integral PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBall \/ Stem:\u003c\/strong\u003e A216 WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eCover:\u003c\/strong\u003e A216 WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eGland Box:\u003c\/strong\u003e A216 WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eSeat:\u003c\/strong\u003e Virgin PTFE\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003ePacking:\u003c\/strong\u003e PTFE\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody Bolts:\u003c\/strong\u003e A193 B7\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eConnection:\u003c\/strong\u003e ANSI 150 RF Flanges — ASME B16.10 Face-to-face\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eFlange Drilling:\u003c\/strong\u003e ASME B16.5\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eNominal Sizes:\u003c\/strong\u003e 1\" (DN25), 1½\" (DN40), 2\" (DN50), 3\" (DN80), 4\" (DN100)\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eNominal Pressure:\u003c\/strong\u003e ANSI 150 — up to 290 psi (20 bar) at 38 °C\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -20 °C to +200 °C\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eActuator Mounting:\u003c\/strong\u003e ISO 5211\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eRecommended Flange Gasket:\u003c\/strong\u003e Virgin PTFE or spiral wound with PTFE spiral — never a fiber gasket that could be attacked by the aggressive fluid\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eChemical compatibility — most common fluids\u003c\/h3\u003e\n\u003ctable\u003e\n\n  \u003cthead\u003e\n\n    \u003ctr\u003e\n\n      \u003cth\u003eFluid\u003c\/th\u003e\n\n      \u003cth\u003eSS316\u003c\/th\u003e\n\n      \u003cth\u003ePVC\u003c\/th\u003e\n\n      \u003cth\u003ePFA Ball Valve ← This product\u003c\/th\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/thead\u003e\n\n  \u003ctbody\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eHF — any concentration\u003c\/td\u003e\n\n      \u003ctd\u003e❌ Hours\u003c\/td\u003e\n\n      \u003ctd\u003e❌ Days\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eH₂SO₄ \u0026gt;50%\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eHCl \u0026gt;35%\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️ Limit\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eClO₂ \u0026gt;5 g\/L\u003c\/td\u003e\n\n      \u003ctd\u003e❌ Severe pitting\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eH₂O₂ \u0026gt;30%\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eHNO₃ \u0026gt;65%\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eAqua regia (HNO₃+HCl)\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eSX-EW Electrolyte H₂SO₄+Cu²⁺\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eNaOH up to 50%\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e✅\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eLiquid Br₂\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e✅\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eElemental Fluorine F₂\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌ No standard viable material\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003ch3\u003eAutomation in environments with aggressive acid vapors\u003c\/h3\u003e\n\u003cp\u003e\n  In installations with HF, concentrated HCl, H₂SO₄, and other strong acids, fluid vapors can reach the actuator and corrode its components — especially the anodized aluminum body of standard actuators. Specific considerations for these environments:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003ePneumatic actuator with stainless steel housing or epoxy coating:\u003c\/strong\u003e For environments with acid vapors, specify an actuator with SS316 housing or with high chemical resistance epoxy coating instead of standard anodized aluminum. Aluminum would corrode within weeks in the presence of HCl or HF vapors.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eSingle-acting Normally Closed (NC):\u003c\/strong\u003e For highly hazardous fluids (HF, ClO₂, concentrated H₂SO₄), automatic shut-off in case of any control system failure is the standard safety requirement — the mechanical spring ensures closure without reliance on electronic components.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eATEX classified areas:\u003c\/strong\u003e In plants where acidic fluid vapors can create hazardous atmospheres, specify an ATEX solenoid. The pneumatic actuator itself does not require ATEX certification — only the control solenoid.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\u003ca href=\"\/collections\/valvulas-bola-con-actuador-neumatico\"\u003eView ball valve assemblies with pneumatic actuator →\u003c\/a\u003e\u003c\/li\u003e\n\n  \u003cli\u003e\u003ca href=\"\/collections\/valvulas-bola-con-actuador-electrico\"\u003eView ball valve assemblies with electric actuator →\u003c\/a\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eMain industries and applications\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eChemical industry — concentrated acids:\u003c\/strong\u003e Production and distribution of HF, H₂SO₄, HCl, HNO₃ and their mixtures in inorganic acid plants. The PFA ball valve is the standard isolation component in concentrated acid lines where SS316 and PVC fail.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003ePetrochemical — HF alkylation:\u003c\/strong\u003e Refinery alkylation units that use HF as a catalyst have hydrofluoric acid lines that require PFA-lined valves at all isolation points. There is no viable alternative for liquid HF service under pressure.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003ePulp and paper — ClO₂ bleaching:\u003c\/strong\u003e ECF bleaching stages with chlorine dioxide require PFA ball valves. SS316 fails due to pitting within weeks, and the corrosion-resistant butterfly valve with molded PTFE liner may have vulnerable penetration lines — the PFA ball valve with continuous lining is the reliable long-term solution.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eMining — SX-EW electrolyte:\u003c\/strong\u003e The copper electrowinning circuit uses 150–200 g\/L H₂SO₄ as electrolyte. PFA ball valves are the standard for electrolyte lines in electrolysis cells in Sonora, Chihuahua, and San Luis Potosí.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eWater treatment — ClO₂ disinfection:\u003c\/strong\u003e Modern water treatment plants that use chlorine dioxide as a disinfectant require PFA corrosion-resistant valves in the generation and distribution lines of pure ClO₂ before dilution.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eSemiconductors and microelectronics:\u003c\/strong\u003e Acid etching processes with HF, HNO₃, and acid mixtures. PFA ball valves are the industry standard due to their purity (no metallic extractables that contaminate substrates) and resistance to process acids.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003ePharmaceutical — synthesis with strong acids:\u003c\/strong\u003e The synthesis of some active pharmaceutical ingredients (APIs) involves strong acids in reaction or purification stages. The PFA ball valve covers these services by combining acid resistance with material purity.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility verification — how Cematic advises\u003c\/h3\u003e\n\u003cp\u003e\n  Correct selection for a specific fluid requires knowing three simultaneous parameters: exact concentration, operating temperature, and presence of other components in solution. At Cematic, we verify the compatibility of the PFA lining for your specific fluid before quoting — and identify whether PFA is necessary or if a lower-cost alternative is sufficient for your specific process conditions. Share the fluid, concentration, and temperature via WhatsApp or to ventas@cematic.com and receive verification free of charge on the same business day.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  For the complete range of corrosion-resistant valves, see \u003ca href=\"\/collections\/valvulas-de-bola-anticorrosivas-interiores-de-pfa\"\u003ePFA corrosion-resistant ball valve category →\u003c\/a\u003e\n\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Ficha Técnica de Válvula de Bola Anticorrosiva con Revestimiento PFA Cematic\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-de-bola-ansi-150-wcb-interior_pfa-pbfl.pdf?v=1777492876\" target=\"_blank\"\u003e\u003cspan style=\"color: #ab2929;\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Cematic","offers":[{"title":"1\"","offer_id":51323115241785,"sku":"PBFL106","price":8967.0,"currency_code":"MXN","in_stock":true},{"title":"1-1\/2\"","offer_id":51323115274553,"sku":"PBFL108","price":13450.5,"currency_code":"MXN","in_stock":true},{"title":"2\"","offer_id":51323115307321,"sku":"PBFL110","price":16140.6,"currency_code":"MXN","in_stock":true},{"title":"2-1\/2\"","offer_id":51323115340089,"sku":"PBFL112","price":18830.7,"currency_code":"MXN","in_stock":true},{"title":"3\"","offer_id":51323115372857,"sku":"PBFL114","price":28694.4,"currency_code":"MXN","in_stock":true},{"title":"4\"","offer_id":51323115405625,"sku":"PBFL118","price":34074.6,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-antocorrosiva-pfa-2-vias.jpg?v=1776460998"},{"product_id":"valvula-bola-3-vias-anticorrosiva-pfa-wcb-ansi-150","title":"3-Way WCB Anti-Corrosive Ball Valve | PFA Lined | ANSI 150 | Diverting and Mixing","description":"\u003ch2\u003e3-Way Anti-Corrosion Ball Valve — WCB Body with PFA Lining, ANSI 150 Flange, L and T Port\u003c\/h2\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003e3-way anti-corrosion ball valve with PFA lining\u003c\/strong\u003e combines two of the most demanding features of process engineering in a single component: the diversion and mixing functionality of the 3-way valve, and the total chemical resistance of PFA (Perfluoroalkoxy) lining for the industry's most aggressive fluids — hydrofluoric acid, concentrated sulfuric acid, chlorine dioxide, concentrated hydrochloric acid, and any fluid that would destroy stainless steel, PVC, or non-fluorinated polymers. With a single PFA-lined ball and a 90° turn, it diverts the flow of an aggressive acid between two alternative destinations (L-port) or mixes two corrosive streams into a single outlet (T-port) — without any metallic surface contacting the fluid in any operating position.\n\u003c\/p\u003e\n\u003cp\u003e\n  Available in diameters from 1\" to 4\" with ANSI 150 flanges and ISO 5211 mounting pad for automation with pneumatic or electric actuators.\n\u003c\/p\u003e\n\n\u003ch3\u003eWhy a specifically anti-corrosion 3-way valve\u003c\/h3\u003e\n\u003cp\u003e\n  In aggressive chemical installations, the diversion and mixing of corrosive fluids is a frequent operational necessity — selection between two acid sources, product diversion between two storage tanks, mixing of two reagents before the addition point, reagent recirculation during startup. The conventional alternative of two coordinated 2-way valves is possible, but has specific disadvantages in aggressive acid installations:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eMore flanged connections:\u003c\/strong\u003e Every flanged connection in an HF or ClO₂ line is a potential leak point — the 3-way valve reduces the number of connections to three instead of four.\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eRisk of period with both circuits open:\u003c\/strong\u003e If the control logic fails when switching between two 2-way valves, there may be a period where both circuits are simultaneously open — in aggressive acid lines, this can be a safety incident. The 3-way ball physically prevents this condition.\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eMore anti-corrosion components:\u003c\/strong\u003e Two PFA anti-corrosion 2-way valves cost more than one 3-way valve of the same diameter, and require two actuators instead of one for automation.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eL-Port vs. T-Port — specify the correct one before ordering\u003c\/h3\u003e\n\n\u003ch4\u003eL-Port — Acid Diversion between Two Destinations\u003c\/h4\u003e\n\u003cp\u003e\n  The L-port ball always connects only two of the three ports — never all three simultaneously.\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e0° Position:\u003c\/strong\u003e Port A connected to Port B. Port C blocked.\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e90° Position:\u003c\/strong\u003e Port A connected to Port C. Port B blocked.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications in corrosive fluid lines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003eAcid diversion between two alternative storage tanks\u003c\/li\u003e\n\n  \u003cli\u003eSelection between main acid source and backup source\u003c\/li\u003e\n\n  \u003cli\u003eBypass of filters or heat exchangers in aggressive acid lines\u003c\/li\u003e\n\n  \u003cli\u003eInstantaneous switching between two destinations without a period of both circuits open\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch4\u003eT-Port — Mixing Two Corrosive Streams\u003c\/h4\u003e\n\u003cp\u003e\n  The T-port ball in the central position connects all three ports simultaneously. In extreme positions, it connects only two.\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e0° Position (central):\u003c\/strong\u003e Ports A, B and C connected — mixing two corrosive streams into a single outlet\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e90° Position:\u003c\/strong\u003e Port A with Port B only\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003e-90° Position:\u003c\/strong\u003e Port A with Port C only\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications in corrosive fluid lines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003eMixing two acids before the dosing point\u003c\/li\u003e\n\n  \u003cli\u003eReagent recirculation to the source tank during process startup\u003c\/li\u003e\n\n  \u003cli\u003eAcid distribution to two addition points with simultaneous position at startup\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\n  \u003cem\u003eNot sure which port you need? It's the most frequent specification error in 3-way valves — consult us before ordering.\u003c\/em\u003e\n\u003c\/p\u003e\n\n\u003ch3\u003ePFA Lining — total coverage without exposed metal\u003c\/h3\u003e\n\u003cp\u003e\n  As with the 2-way PFA anti-corrosion ball valve, the PFA lining covers absolutely all internal surfaces in contact with the fluid:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e✅ \u003cstrong\u003eBody:\u003c\/strong\u003e WCB + integral PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e✅ \u003cstrong\u003eCover:\u003c\/strong\u003e WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e✅ \u003cstrong\u003eGland packing:\u003c\/strong\u003e WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e✅ \u003cstrong\u003eBall \/ Stem:\u003c\/strong\u003e WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e✅ \u003cstrong\u003eSeat:\u003c\/strong\u003e Virgin PTFE\u003c\/li\u003e\n\n  \u003cli\u003e✅ \u003cstrong\u003ePacking:\u003c\/strong\u003e PTFE\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\n  \u003cstrong\u003eNo metallic surface is exposed to the fluid in any open or closed position — neither at 0° nor at 90°.\u003c\/strong\u003e The fusion-applied PFA creates a continuous barrier without joints or porosity that prevents any contact between the aggressive fluid and the structural WCB metal.\n\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eType:\u003c\/strong\u003e Quarter-turn floating ball, 3-way\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody design:\u003c\/strong\u003e Two-piece body\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBall configuration:\u003c\/strong\u003e L-port (diversion\/selection) or T-port (mixing\/distribution) — specify when ordering\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody material:\u003c\/strong\u003e A216 WCB + integral PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBall \/ Stem:\u003c\/strong\u003e A216 WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eCover:\u003c\/strong\u003e A216 WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eGland packing:\u003c\/strong\u003e A216 WCB + PFA lining\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eSeat:\u003c\/strong\u003e Virgin PTFE\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003ePacking:\u003c\/strong\u003e PTFE\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eConnection:\u003c\/strong\u003e ANSI 150 RF flanges — face-to-face ASME B16.10\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eFlange drilling:\u003c\/strong\u003e ASME B16.5\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eNominal diameters:\u003c\/strong\u003e 1\" (DN25), 1½\" (DN40), 2\" (DN50), 3\" (DN80), 4\" (DN100)\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eNominal pressure:\u003c\/strong\u003e ANSI 150 — up to 290 psi (20 bar) at 38 °C\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -20 °C to +200 °C\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eActuator travel:\u003c\/strong\u003e 90° between extreme positions\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eActuator mounting:\u003c\/strong\u003e ISO 5211\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eRecommended flange gasket:\u003c\/strong\u003e Virgin PTFE — never a fiber gasket that could be attacked by the aggressive fluid\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible fluids\u003c\/h3\u003e\n\u003ctable\u003e\n\n  \u003cthead\u003e\n\n    \u003ctr\u003e\n\n      \u003cth\u003eFluid\u003c\/th\u003e\n\n      \u003cth\u003eSS316\u003c\/th\u003e\n\n      \u003cth\u003ePVC\u003c\/th\u003e\n\n      \u003cth\u003e3-Way PFA Ball Valve ← This product\u003c\/th\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/thead\u003e\n\n  \u003ctbody\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eHF — any concentration\u003c\/td\u003e\n\n      \u003ctd\u003e❌ Hours\u003c\/td\u003e\n\n      \u003ctd\u003e❌ Days\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eH₂SO₄ \u0026gt;50%\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eHCl \u0026gt;35%\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️ Limit\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eClO₂ \u0026gt;5 g\/L\u003c\/td\u003e\n\n      \u003ctd\u003e❌ Severe pitting\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eH₂O₂ \u0026gt;30%\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eHNO₃ \u0026gt;65%\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eAqua Regia (HNO₃+HCl)\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eSX-EW Electrolyte H₂SO₄+Cu²⁺\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eNaOH up to 50%\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️\u003c\/td\u003e\n\n      \u003ctd\u003e✅\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eBr₂ liquid\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e❌\u003c\/td\u003e\n\n      \u003ctd\u003e✅\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003ch3\u003eAutomation in environments with aggressive acid vapors\u003c\/h3\u003e\n\u003cp\u003e\n  In installations with HF, concentrated HCl, H₂SO₄, and other strong acids, fluid vapors can corrode actuator components. The single-acting NC pneumatic actuator is the standard safety configuration:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eNC pneumatic actuator with acid vapor resistant housing:\u003c\/strong\u003e Specify SS316 housing or high chemical resistance epoxy coating. Standard anodized aluminum would corrode within weeks in the presence of HCl or HF vapors.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eMandatory NC fail-safe for hazardous fluids:\u003c\/strong\u003e The mechanical spring ensures the valve closes in the event of any air supply or control signal failure — interrupting the aggressive acid flow without relying on electronic components. Define which of the two circuits (position A or position B) is the safe state in case of failure before ordering the actuator.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eATEX classified zones:\u003c\/strong\u003e In plants where acid vapors can create hazardous atmospheres, specify ATEX solenoid. The pneumatic actuator itself does not require ATEX certification — only the solenoid.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eDo not use in intermediate position:\u003c\/strong\u003e The 3-way valve operates between its two extreme positions (0° and 90°) only — operating in an intermediate position causes accelerated seat wear.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\u003ca href=\"\/collections\/valvulas-bola-con-actuador-neumatico\"\u003eSee ball valve sets with pneumatic actuator →\u003c\/a\u003e\u003c\/li\u003e\n\n  \u003cli\u003e\u003ca href=\"\/collections\/valvulas-bola-con-actuador-electrico\"\u003eSee ball valve sets with electric actuator →\u003c\/a\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eMain industries and applications\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eChemical industry — concentrated acid diversion:\u003c\/strong\u003e Selection between two H₂SO₄, HCl or HNO₃ storage tanks, diversion between two acid product destinations, bypass of equipment in inorganic acid lines. The PFA 3-way anti-corrosion valve is the only viable diversion component for these fluids in diameters from 1\" to 4\".\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003ePetrochemical — HF alkylation:\u003c\/strong\u003e Diversion of hydrofluoric acid flows in refinery alkylation units — selection between alternative process routes, bypass of acid regeneration equipment. PFA lining is the only viable material for diverting pressurized liquid HF.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003ePulp and paper — ClO₂ distribution:\u003c\/strong\u003e Diversion of chlorine dioxide between bleaching stages, selection between alternative dosing lines. SS316 fails due to pitting within weeks under these conditions — the PFA 3-way ball is the reliable solution.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eMining — SX-EW electrolyte distribution:\u003c\/strong\u003e Diversion of concentrated H₂SO₄ electrolyte between electrodeposition cells, selection between distribution circuits in copper electrolysis plants.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eWater treatment — disinfection reagent distribution:\u003c\/strong\u003e Diversion of concentrated ClO₂ between alternative injection points, selection between dosing units in water treatment plants using chlorine dioxide as the primary disinfectant.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eSemiconductors — acid mixture distribution:\u003c\/strong\u003e Diversion of HF, HNO₃, and etching acid mixtures between alternative process chambers in integrated circuit and flat panel display manufacturing.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility verification\u003c\/h3\u003e\n\u003cp\u003e\n  Correct selection requires knowing the exact concentration, temperature, and complete composition of the fluid. Share this data via WhatsApp or to ventas@cematic.com — we will verify PFA compatibility for your specific process at no cost on the same business day.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  For the complete range of anti-corrosion valves, see \u003ca href=\"\/collections\/valvulas-de-bola-anticorrosivas-interiores-de-pfa\"\u003ePFA anti-corrosion ball valve category →\u003c\/a\u003e\n\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-de-bola-3way-ansi-150-wcb-pfa-interior-pbtfl.pdf?v=1777492859\" title=\"Ficha Técnica de Válvula de Bola 3 Vías Anticorrosiva PFA Cematic\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan style=\"color: #ab2929;\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Cematic","offers":[{"title":"1\" \/ L","offer_id":51323059536185,"sku":"PBTFL106","price":21520.8,"currency_code":"MXN","in_stock":true},{"title":"1\" \/ T","offer_id":51323096990009,"sku":"PBTFL206","price":21520.8,"currency_code":"MXN","in_stock":true},{"title":"1-1\/2\" \/ L","offer_id":51323059568953,"sku":"PBTFL108","price":32729.55,"currency_code":"MXN","in_stock":true},{"title":"1-1\/2\" \/ T","offer_id":51323097022777,"sku":"PBTFL208","price":32729.55,"currency_code":"MXN","in_stock":true},{"title":"2\" \/ L","offer_id":51323059601721,"sku":"PBTFL110","price":40351.5,"currency_code":"MXN","in_stock":true},{"title":"2\" \/ T","offer_id":51323097055545,"sku":"PBTFL210","price":40351.5,"currency_code":"MXN","in_stock":true},{"title":"2-1\/2\" \/ L","offer_id":51323059634489,"sku":"PBTFL112","price":47525.1,"currency_code":"MXN","in_stock":true},{"title":"2-1\/2\" \/ T","offer_id":51323097088313,"sku":"PBTFL212","price":47525.1,"currency_code":"MXN","in_stock":true},{"title":"3\" \/ L","offer_id":51323059667257,"sku":"PBTFL114","price":71736.0,"currency_code":"MXN","in_stock":true},{"title":"3\" \/ T","offer_id":51323097121081,"sku":"PBTFL214","price":71736.0,"currency_code":"MXN","in_stock":true},{"title":"4\" \/ L","offer_id":51323059700025,"sku":"PBTFL118","price":85186.5,"currency_code":"MXN","in_stock":true},{"title":"4\" \/ T","offer_id":51323097153849,"sku":"PBTFL218","price":85186.5,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-bola-anticorrosiva-pfa-3-vias.jpg?v=1776461072"},{"product_id":"valvula-diafragma-anticorrosiva-pfa-wcb-ansi-150","title":"Corrosion-Resistant Diaphragm Valve WCB | PFA Lined | ANSI 150 | Acids \u0026 Chemicals","description":"\u003ch2\u003eCorrosion-Resistant Diaphragm Valve — WCB Body with PFA Lining, ANSI 150 Flange, ½\" to 4\"\u003c\/h2\u003e\u003cp\u003e  The \u003cstrong\u003ecorrosion-resistant diaphragm valve with PFA lining\u003c\/strong\u003e is fundamentally different from all ball, butterfly, and globe valves in the catalog in one decisive aspect: \u003cstrong\u003ethe only moving component that touches the fluid is the flexible diaphragm\u003c\/strong\u003e — there is no stem, ball, or obturator exposed to the aggressive fluid. The metal stem pushes the diaphragm from the outside against the body weir to close, and releases it to open, but never penetrates the fluid space. This complete separation between the operating mechanism and the aggressive fluid is the fundamental advantage of the diaphragm valve for services involving concentrated acids, strong oxidizers, and high-purity fluids.\u003c\/p\u003e\u003cp\u003e  The diaphragm is a two-layer construction: an \u003cstrong\u003eEPDM\u003c\/strong\u003e core that provides the elasticity and recovery force needed to repeatedly seal and open, with an outer face of \u003cstrong\u003ePFA (or FEP)\u003c\/strong\u003e which is the only surface in contact with the fluid — resistant to virtually all acids, alkalis, and oxidizers that would destroy any conventional elastomer. The WCB body with PFA internal lining completes the total protection of the metal.\u003c\/p\u003e\u003ch3\u003eWhy the diaphragm valve is different from the ball valve for aggressive fluids\u003c\/h3\u003e\u003cp\u003e  Both the PFA corrosion-resistant ball valve and the PFA corrosion-resistant diaphragm valve handle extreme corrosive fluids — but they have distinct technical advantages that determine when to use each:\u003c\/p\u003e\u003ctable\u003e  \u003cthead\u003e    \u003ctr\u003e      \u003cth\u003eCriterion\u003c\/th\u003e      \u003cth\u003ePFA Diaphragm Valve ← This product\u003c\/th\u003e      \u003cth\u003ePFA Corrosion-Resistant Ball Valve\u003c\/th\u003e    \u003c\/tr\u003e  \u003c\/thead\u003e  \u003ctbody\u003e    \u003ctr\u003e      \u003ctd\u003eStem in contact with fluid\u003c\/td\u003e      \u003ctd\u003e✅ Never — stem does not penetrate the fluid space\u003c\/td\u003e      \u003ctd\u003ePFA-lined stem but inside the body\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003eFlow with fine suspended solids\u003c\/td\u003e      \u003ctd\u003e✅ Suitable — no cavities for solids to accumulate\u003c\/td\u003e      \u003ctd\u003e⚠️ Solids can accumulate in the ball cavity\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003eNon-turbulent flow\u003c\/td\u003e      \u003ctd\u003e✅ Smooth Weir-type flow characteristic\u003c\/td\u003e      \u003ctd\u003eMore direct flow but with turbulence in partial opening\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003ePressure drop in open position\u003c\/td\u003e      \u003ctd\u003eHigher — the weir creates flow resistance\u003c\/td\u003e      \u003ctd\u003e✅ Lower — practically direct passage\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003eProportional modulating control\u003c\/td\u003e      \u003ctd\u003e✅ Suitable — linear-type flow characteristic\u003c\/td\u003e      \u003ctd\u003eON\/OFF only in standard ball valve\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003eMaximum working pressure\u003c\/td\u003e      \u003ctd\u003e290 psi (20 bar) — limited by diaphragm\u003c\/td\u003e      \u003ctd\u003e✅ 290 psi (20 bar) — similar in ANSI 150\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003eHigh-purity fluids without metal contamination\u003c\/td\u003e      \u003ctd\u003e✅ Ideal — zero metal-fluid contact possible\u003c\/td\u003e      \u003ctd\u003e✅ Also suitable with integral PFA lining\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003eCrystallizing or sticky fluids\u003c\/td\u003e      \u003ctd\u003e✅ Smooth PFA prevents adhesion\u003c\/td\u003e      \u003ctd\u003e⚠️ Can accumulate in the ball cavity\u003c\/td\u003e    \u003c\/tr\u003e  \u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eThe double EPDM + PFA diaphragm — how it works\u003c\/h3\u003e\u003cp\u003e  The diaphragm is the technical heart of this valve. The two-layer construction solves the fundamental problem of single-material diaphragms:\u003c\/p\u003e\u003cul\u003e  \u003cli\u003e    \u003cstrong\u003eInner face (in contact with fluid) — PFA\/FEP:\u003c\/strong\u003e The PFA or FEP fluoropolymer on the diaphragm face that touches the fluid provides practically universal chemical resistance — compatible with HF, concentrated H₂SO₄, concentrated HCl, ClO₂, H₂O₂, and virtually any strong acid, alkali, or oxidizer. PFA does not degrade, swell, or release any compounds into the fluid — essential in high-purity applications.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eOuter face (in contact with mechanism) — EPDM:\u003c\/strong\u003e The EPDM core provides the elasticity and recovery force necessary for the diaphragm to seal tightly against the weir when closing and regain its shape correctly when opening. A pure PFA diaphragm would be too rigid for this flexing cycle — EPDM is the correct material for mechanical support.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eResult:\u003c\/strong\u003e A diaphragm that has the chemical resistance of PFA where it matters (the face touching the fluid) and the elasticity of EPDM where it is needed (the mechanical support for the flexing cycle).  \u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWeir-type body — non-turbulent flow\u003c\/h3\u003e\u003cp\u003e  The \u003cstrong\u003eWeir-type\u003c\/strong\u003e diaphragm valve (raised weir) has a central protrusion in the body — the weir — against which the diaphragm rests when closing. The fluid passes beneath the weir and to the sides in the open position, generating a smooth, non-turbulent flow. Specific advantages of the Weir type:\u003c\/p\u003e\u003cul\u003e  \u003cli\u003e\n\u003cstrong\u003eLaminar flow without turbulence:\u003c\/strong\u003e The flow profile does not generate cavitation or erosion in the diaphragm — significantly extends the service life of the diaphragm compared to through-way designs that generate direct turbulence on the diaphragm.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eShort diaphragm stroke:\u003c\/strong\u003e The diaphragm travels a short distance between open and closed positions — less material fatigue from flexing cycles.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eNo significant dead zones:\u003c\/strong\u003e The Weir-type body has less residual fluid accumulation than the through-way type — advantageous for fluids that crystallize or solidify upon cooling.\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eSuitable for modulating control:\u003c\/strong\u003e The Weir's flow characteristic is approximately linear — the diaphragm can be positioned at any point between open and closed to regulate flow.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eValve components — complete material table\u003c\/h3\u003e\u003ctable\u003e  \u003cthead\u003e    \u003ctr\u003e      \u003cth\u003eNo.\u003c\/th\u003e      \u003cth\u003eComponent\u003c\/th\u003e      \u003cth\u003eMaterial\u003c\/th\u003e      \u003cth\u003eContact with fluid\u003c\/th\u003e    \u003c\/tr\u003e  \u003c\/thead\u003e  \u003ctbody\u003e    \u003ctr\u003e      \u003ctd\u003e1\u003c\/td\u003e      \u003ctd\u003eLocking screw\u003c\/td\u003e      \u003ctd\u003eA320 B8\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e2\u003c\/td\u003e      \u003ctd\u003eBody bolt\u003c\/td\u003e      \u003ctd\u003eA320 B8\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e3\u003c\/td\u003e      \u003ctd\u003eHandwheel\u003c\/td\u003e      \u003ctd\u003eA216 WCB\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e4\u003c\/td\u003e      \u003ctd\u003eSleeve\u003c\/td\u003e      \u003ctd\u003eSS304\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e5\u003c\/td\u003e      \u003ctd\u003eBonnet\u003c\/td\u003e      \u003ctd\u003eA216 WCB\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e6\u003c\/td\u003e      \u003ctd\u003eStem nut\u003c\/td\u003e      \u003ctd\u003eBrass\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e7\u003c\/td\u003e      \u003ctd\u003eStem\u003c\/td\u003e      \u003ctd\u003eSS420\u003c\/td\u003e      \u003ctd\u003eNo — does not penetrate the fluid space\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e8\u003c\/td\u003e      \u003ctd\u003eAdjustable pad\u003c\/td\u003e      \u003ctd\u003eSS304\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e9\u003c\/td\u003e      \u003ctd\u003eCompressor (Disc)\u003c\/td\u003e      \u003ctd\u003eA216 WCB\u003c\/td\u003e      \u003ctd\u003eNo — pushes the diaphragm from the outside\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e10\u003c\/td\u003e      \u003ctd\u003eRubber diaphragm\u003c\/td\u003e      \u003ctd\u003eEPDM\u003c\/td\u003e      \u003ctd\u003eOuter face — mechanical support\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e11\u003c\/td\u003e      \u003ctd\u003eDiaphragm\u003c\/td\u003e      \u003ctd\u003ePFA \/ FEP\u003c\/td\u003e      \u003ctd\u003e✅ Inner face — sole contact with aggressive fluid\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e12\u003c\/td\u003e      \u003ctd\u003eBody\u003c\/td\u003e      \u003ctd\u003eA216 WCB + PFA Lining\u003c\/td\u003e      \u003ctd\u003e✅ Yes — PFA lined\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e13\u003c\/td\u003e      \u003ctd\u003eNut\u003c\/td\u003e      \u003ctd\u003eA194 2H\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e14\u003c\/td\u003e      \u003ctd\u003eFlat washer\u003c\/td\u003e      \u003ctd\u003e1045\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e    \u003ctr\u003e      \u003ctd\u003e15\u003c\/td\u003e      \u003ctd\u003eExternal hex screw\u003c\/td\u003e      \u003ctd\u003eA193 B7\u003c\/td\u003e      \u003ctd\u003eNo\u003c\/td\u003e    \u003c\/tr\u003e  \u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Weir Diaphragm (raised weir)\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eDesign standard:\u003c\/strong\u003e MSS-SP-88\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eFace to face:\u003c\/strong\u003e EN 558-1\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eFlanges:\u003c\/strong\u003e ASME\/ANSI B16.5 — ANSI 150 RF\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eInspection and testing:\u003c\/strong\u003e API 598\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eBody material:\u003c\/strong\u003e A216 WCB + PFA interior lining\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eDiaphragm:\u003c\/strong\u003e PFA\/FEP (inner face) + EPDM (support)\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eStem:\u003c\/strong\u003e SS420 — does not penetrate the fluid space\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eNominal diameters:\u003c\/strong\u003e ½\" (DN15), ¾\" (DN20), 1\" (DN25), 1¼\" (DN32), 1½\" (DN40), 2\" (DN50), 2½\" (DN65), 3\" (DN80), 4\" (DN100)\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eMaximum pressure:\u003c\/strong\u003e 285–290 psi (19.6–20 bar) at 38 °C — reduces with temperature according to ASME B16.34\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e -30 °C to +200 °C — verify specific fluid concentration and temperature\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eFlow characteristic:\u003c\/strong\u003e 1Cv = 1.167Kv — approximately linear flow characteristic\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eStandard operation:\u003c\/strong\u003e Manual with ergonomic handwheel\u003c\/li\u003e  \u003cli\u003e\n\u003cstrong\u003eVacuum capability:\u003c\/strong\u003e Yes — suitable for vacuum service\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChemical compatibility confirmed in technical sheet\u003c\/h3\u003e\u003cul\u003e  \u003cli\u003e✅ Hydrochloric acid HCl — any concentration\u003c\/li\u003e  \u003cli\u003e✅ Nitric acid HNO₃ — including concentrated\u003c\/li\u003e  \u003cli\u003e✅ Hydrofluoric acid HF — any concentration\u003c\/li\u003e  \u003cli\u003e✅ Liquid chlorine Cl₂\u003c\/li\u003e  \u003cli\u003e✅ Sulfuric acid H₂SO₄ — including concentrated\u003c\/li\u003e  \u003cli\u003e✅ Sodium hypochlorite NaClO — any concentration\u003c\/li\u003e  \u003cli\u003e✅ Peroxides (H₂O₂ and other oxidizers)\u003c\/li\u003e  \u003cli\u003e✅ Concentrated alkalis (NaOH, KOH)\u003c\/li\u003e  \u003cli\u003e✅ Highly aggressive organic solvents\u003c\/li\u003e  \u003cli\u003e✅ Extremely high purity fluids — no metal leaching\u003c\/li\u003e  \u003cli\u003e⚠️ Always verify specific process concentration and temperature — compatibility may vary under extreme conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eMain applications\u003c\/h3\u003e\u003cul\u003e  \u003cli\u003e    \u003cstrong\u003eChemical and petrochemical industry — concentrated acids:\u003c\/strong\u003e Isolation and flow control in lines for HF, concentrated H₂SO₄, concentrated HCl, HNO₃, and their mixtures. The absence of a stem in the fluid eliminates the most frequent leak point in process valves with extreme corrosive fluids.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eChlorine, hypochlorite, and oxidizer processes:\u003c\/strong\u003e Distribution of liquid chlorine, high-concentration sodium hypochlorite, and peroxides in water treatment plants, paper bleaching, and chemical synthesis. The PFA diaphragm resists the aggressive oxidation of these fluids indefinitely.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003ePharmaceutical industry — high purity:\u003c\/strong\u003e Control of synthesis fluids, process solvents, and acidic solutions in pharmaceutical plants where metallic fluid contamination is unacceptable. PFA has practically zero leaching — it does not release any compounds into the fluid.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eSemiconductors and ultrapure water (UPW):\u003c\/strong\u003e Control of etching acid mixtures, ultrapure water distribution, and process fluids in integrated circuit and flat panel display manufacturing. PFA is the standard material in the semiconductor industry due to its purity and chemical resistance.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eMining — SX-EW and acid leaching:\u003c\/strong\u003e Control of concentrated H₂SO₄ electrolyte in copper electrowinning cells, acid leaching solutions, and flotation reagents. The PFA diaphragm valve resists aggressive electrolyte better than any valve with an exposed metallic stem.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eWater treatment — ClO₂ and chlorine disinfection:\u003c\/strong\u003e Control of chlorine dioxide, dissolved gaseous chlorine, and hypochlorite in water treatment plants using these disinfectants. PFA resists concentrations that would destroy SS316 in weeks.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eCrystallizing or sticky fluids:\u003c\/strong\u003e The smooth PFA inner lining prevents the adhesion of crystals and solids that would accumulate in the cavities of a ball or butterfly valve — facilitating cleaning and preventing valve blockage.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003ePaper, ink, pigment, and coating manufacturing:\u003c\/strong\u003e Control of bleaching solutions, acidic pigments, and aggressive solvent coatings where the smooth PFA surface prevents scaling and simplifies cleaning between batches.  \u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDiaphragm valve automation\u003c\/h3\u003e\u003cp\u003e  The standard version includes manual operation with an ergonomic handwheel. For automation, the diaphragm valve is compatible with linear pneumatic actuators that replace the handwheel — the actuator pushes and releases the diaphragm with the same linear action as the manual handwheel. Specific considerations:\u003c\/p\u003e\u003cul\u003e  \u003cli\u003e    \u003cstrong\u003eNC linear pneumatic actuator:\u003c\/strong\u003e For hazardous fluids (HF, ClO₂, concentrated H₂SO₄), automatic spring closure upon air supply loss is the safety standard. The single-acting NC linear pneumatic actuator is the most common configuration.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eModulating control:\u003c\/strong\u003e The Weir's linear flow characteristic allows proportional flow control with a 4–20 mA electropneumatic positioner — the diaphragm valve is suitable for PID control loops in corrosive fluids where a globe valve would have chemical compatibility issues.  \u003c\/li\u003e  \u003cli\u003e    \u003cstrong\u003eActuator material in acidic vapors:\u003c\/strong\u003e Specify an actuator with an SS316 casing or a high chemical resistance epoxy coating — standard anodized aluminum would corrode in environments with HF or HCl vapors.  \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e  For the complete range of corrosion-resistant valves, see \u003ca href=\"\/collections\/valvulas-de-bola-anticorrosivas-interiores-de-pfa\"\u003ePFA corrosion-resistant valves category →\u003c\/a\u003e\u003c\/p\u003e\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-de-diafragma-ansi-150-wcb-interior_pfa-pbfl.pdf?v=1777492808\" title=\"Ficha Técnica de Diafragma Anticorrosiva Recubrimiento Interior PFA Cematic\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan style=\"color: #ab2929;\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Cematic","offers":[{"title":"1\/2\"","offer_id":51323172094265,"sku":"PDFL102","price":6276.9,"currency_code":"MXN","in_stock":true},{"title":"1\"","offer_id":51323172127033,"sku":"PDFL106","price":7621.95,"currency_code":"MXN","in_stock":true},{"title":"1-1\/2\"","offer_id":51323172159801,"sku":"PDFL108","price":10760.4,"currency_code":"MXN","in_stock":true},{"title":"2\"","offer_id":51323172192569,"sku":"PDFL110","price":13002.15,"currency_code":"MXN","in_stock":true},{"title":"2-1\/2\"","offer_id":51323172225337,"sku":"PDFL112","price":18830.7,"currency_code":"MXN","in_stock":true},{"title":"3\"","offer_id":51323172258105,"sku":"PDFL114","price":27349.35,"currency_code":"MXN","in_stock":true},{"title":"4\"","offer_id":51323172290873,"sku":"PDFL118","price":32729.55,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-anticorrosiva-diafragma-pfa.jpg?v=1776461126"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/collections\/valvula-de-bola-wcb-interior-pfa-brida-ansi150_8ed83fcb-1239-4602-8090-dd6b36f38975.jpg?v=1778535023","url":"https:\/\/cematic.com\/collections\/valvulas-bola-anticorrosivas-pfa.oembed","provider":"Cematic","version":"1.0","type":"link"}