{"title":"V-Port Segmented Ball Valve — 316 Stainless Steel | ANSI 150 | Metal Seat","description":"\u003ch2\u003eWhat is a V-port ball valve and when to use it?\u003c\/h2\u003e\n\n\u003cp\u003e\n  Unlike a standard ball valve—whose solid ball is only used for ON\/OFF shutoff—the \u003cstrong\u003esegmented ball valve\u003c\/strong\u003e uses a V-port parabolic ball that allows for \u003cstrong\u003eprecise modulating control\u003c\/strong\u003e of flow: as the segment rotates from 0° to 90°, the flow area progressively increases following a nearly linear or equal percentage flow characteristic, depending on the V-port angle. This makes it a superior alternative to globe and butterfly valves in applications where the fluid contains solids, fibers, or particles that would obstruct or damage those designs.\n\u003c\/p\u003e\n\u003cp\u003e\n  The sharp edge of the V-port also acts as a blade that \u003cstrong\u003ecleanly cuts through\u003c\/strong\u003e fibers, lumps, and particles during closing, preventing seat obstruction and the trapping of solids between the ball and the seal—the most frequent problem with globe or butterfly valves in these services.\n\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eV-Port \/ V-Ball segmented ball valve, quarter-turn 0°–90°\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBody Material\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eAISI 316 Stainless Steel (CF8M)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eSegment (Ball) Material\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e316 Stainless Steel, with option for hard coating (Stellite \/ tungsten carbide) for severe abrasive services\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eSeal \/ Seat Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eMetal (metal-to-metal) with live-loaded spring — no elastomeric seat that can be damaged by solids or high temperatures\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eStem Packing\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eStandard expanded graphite (Grafoil); PTFE upon request for high-purity fluids\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePressure Class\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eANSI 150 (PN20) — maximum working pressure 19.6 bar at ambient temperature\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e-29 °C to 180 °C with graphite packing\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eANSI B16.5 Class 150 Flanges, flat face (FF) or raised face (RF)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eAvailable Diameters\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eDN50 (2\") — DN200 (8\") standard; other diameters upon consultation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eFlow Characteristic\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eEqual percentage \/ nearly linear depending on V-port opening angle\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eRangeability\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eUp to 200:1 — very wide control range in a single device\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eActuator Interface\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eISO 5211 — compatible with standard pneumatic and electric actuators\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eDesign Standards\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eASME B16.34, API 6D, ASME B16.10 (face-to-face)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eFactory Test\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eAPI 598 — hydrostatic body and seat test, low-pressure pneumatic test\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eAdvantages of Metal Seat vs. Elastomeric Seat\u003c\/h2\u003e\n\u003cp\u003e\n  The Cematic segmented ball valve uses a metal seat with live-loaded spring—not a PTFE or elastomeric seat. This is a critical difference in difficult services:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo degradation by temperature:\u003c\/strong\u003e The metal seat operates without restrictions up to 180 °C. A PTFE seat loses rigidity and sealing above 150 °C, and an EPDM seat fails above 120 °C.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo damage from abrasive particles:\u003c\/strong\u003e Abrasive solids and particles in the fluid scratch and erode PTFE within a few months of operation. The metal seat resists erosion thanks to its higher surface hardness.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo extrusion due to high differential pressures:\u003c\/strong\u003e At high pressures, PTFE can extrude into the fluid path, causing leaks and trapping. The metal seat maintains its geometry under load.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSelf-cleaning by design:\u003c\/strong\u003e The live-loaded spring keeps the seat in contact with the spherical segment even in a partially open position, sweeping away solid deposits with each cycle.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLonger overall service life:\u003c\/strong\u003e In services with slurries, pulps, or abrasive fluids, a metal seat can last 5 to 10 times longer than a PTFE seat, drastically reducing the total cost of maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFlow Characteristic — Why does the \"V\" matter?\u003c\/h2\u003e\n\u003cp\u003e\n  The \"V\" geometry of the spherical segment is not just aesthetic — it directly defines the valve's control capability. As the segment rotates from 0° to 90°, the flow area grows following an equal percentage curve: small changes in opening at positions close to closing produce small variations in flow rate (high sensitivity when most needed), while in more open positions, the same angular change produces a greater variation in flow rate.\n\u003c\/p\u003e\n\u003cp\u003e\n  This characteristic, combined with a \u003cstrong\u003erangeability of up to 200:1\u003c\/strong\u003e, means that the valve can precisely control from very low flow rates to the maximum design flow rate without changing the device. For the control engineer, this translates into more stable PID loops, less oscillation, and less need to readjust parameters due to changes in process conditions.\n\u003c\/p\u003e\n\n\u003ch2\u003eComparison: Segmented Valve vs. Other Control Valves\u003c\/h2\u003e\n\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eCriterion\u003c\/th\u003e\n      \u003cth\u003eV-Port Segmented Ball Valve\u003c\/th\u003e\n      \u003cth\u003eGlobe Valve\u003c\/th\u003e\n      \u003cth\u003eHP Butterfly Valve\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFluids with solids\u003c\/td\u003e\n      \u003ctd\u003e✅ Excellent\u003c\/td\u003e\n      \u003ctd\u003e❌ Frequent obstruction\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Moderate\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eViscous fluids \/ pulps\u003c\/td\u003e\n      \u003ctd\u003e✅ Excellent\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Fair\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Fair\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eFlow characteristic\u003c\/td\u003e\n      \u003ctd\u003e✅ Linear \/ Equal %\u003c\/td\u003e\n      \u003ctd\u003e✅ Linear \/ Equal %\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Sinusoidal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRangeability\u003c\/td\u003e\n      \u003ctd\u003e✅ Up to 200:1\u003c\/td\u003e\n      \u003ctd\u003e✅ Up to 50:1\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Up to 30:1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePressure drop when open\u003c\/td\u003e\n      \u003ctd\u003e✅ Low\u003c\/td\u003e\n      \u003ctd\u003e❌ High\u003c\/td\u003e\n      \u003ctd\u003e✅ Very low\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eHigh temperature (\u0026gt;150°C)\u003c\/td\u003e\n      \u003ctd\u003e✅ Metal seat\u003c\/td\u003e\n      \u003ctd\u003e✅ Metal seat\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Limited by seat\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSelf-cleaning action\u003c\/td\u003e\n      \u003ctd\u003e✅ Yes — V-port edge\u003c\/td\u003e\n      \u003ctd\u003e❌ No\u003c\/td\u003e\n      \u003ctd\u003e❌ No\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eActuation torque\u003c\/td\u003e\n      \u003ctd\u003e✅ Low (quarter turn)\u003c\/td\u003e\n      \u003ctd\u003e❌ High (linear)\u003c\/td\u003e\n      \u003ctd\u003e✅ Very low\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaintenance cost\u003c\/td\u003e\n      \u003ctd\u003e✅ Low\u003c\/td\u003e\n      \u003ctd\u003e⚠️ Medium-high\u003c\/td\u003e\n      \u003ctd\u003e✅ Low\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eAutomation — Integration with Actuator and Positioner\u003c\/h2\u003e\n\u003cp\u003e\n  The segmented ball valve is designed from its conception to operate in automatic control loops with a modulating signal. The ISO 5211 top-works interface allows direct coupling of:\n\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eQuarter-turn pneumatic actuator\u003c\/strong\u003e (double-acting recommended for modulating control) with an \u003cstrong\u003eelectropneumatic positioner\u003c\/strong\u003e that receives a 4–20 mA signal from the PID controller and positions the segment with an accuracy of ±1° or better. This is the most common configuration in the industry due to its response speed and low cost.\n  \u003c\/li\u003e\n  \u003cli\u003e\n    \u003cstrong\u003eQuarter-turn electric actuator\u003c\/strong\u003e with a 4–20 mA or 0–10 V input signal, position indication, and Modbus or other protocol communication. Ideal when no compressed air supply is available or when direct digital integration is required.\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\n  Cematic supplies the segmented valve as a complete package with actuator and positioner, assembled and calibrated in the workshop. The assembly arrives ready for installation and connection to the control signal of your PLC or DCS.\n\u003c\/p\u003e\n\n\u003ch2\u003eMain Industrial Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePulp and paper \/ cellulose:\u003c\/strong\u003e Flow control of fibrous pulp in digesters, washers, refiners, and bleaching systems. The cutting action of the V-port eliminates fiber clogging that would render a globe valve useless in days.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMining and metallurgy:\u003c\/strong\u003e Regulation of process slurries, tailings, lime slurries, and fluids with high abrasive solid loads in thickeners, flotation cells, and filter presses.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWastewater treatment:\u003c\/strong\u003e Control of activated sludge, dewatered sludge, and effluent mixtures with solids in municipal and industrial plants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemical and petrochemical industry:\u003c\/strong\u003e Regulation of viscous fluids, reactive fluids with particles, two-phase mixtures, and products that crystallize or polymerize on the internal surfaces of a conventional valve.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFood industry:\u003c\/strong\u003e Control of fruit pulps, pastes, concentrates, molasses, and other viscous products or products with suspended solids. The SS316 body is compatible with food fluids and CIP solutions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower generation:\u003c\/strong\u003e Regulation of steam, condensate, boiler water, and cooling fluids in thermal power plants where a metal seat is required due to temperature.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSteel industry:\u003c\/strong\u003e Control of cooling water contaminated with scale, hydraulic oils with particles, and other aggressive fluids typical of steel production.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen is the segmented valve NOT the right choice?\u003c\/h2\u003e\n\u003cp\u003e\n  The metal seat of the segmented valve does not provide Class VI (bubble-tight \/ zero-leakage) tightness. If your application requires total hermetic closure—as in safety systems where zero leakage is mandatory—consider a conventional ball valve with a PTFE seat or a globe valve with a low-closing plug. The segmented valve tolerates controlled seat leakage according to ANSI\/FCI 70-2 Class IV or Class V, which is perfectly acceptable for process control but not for critical safety isolation.\n\u003c\/p\u003e\n\n\u003ch2\u003eRequest a quote\u003c\/h2\u003e\n\u003cp\u003e\n  To quote the segmented ball valve with the exact specifications for your process—diameter, pressure, temperature, fluid, and required automation level—contact us via WhatsApp or at ventas@cematic.com. Our technical team will perform a complete selection and issue a formal quote on the same business day.\n\u003c\/p\u003e","products":[{"product_id":"valvula-bola-segmentada-v-ss316-ansi-150","title":"V-Segment Ball Valve SS316 | Stellite Seat | ANSI 150 | Modulating Control","description":"\u003ch2\u003eV-Segment Ball Valve — CF8M Body (SS316), Stellite Seat, Modulating Control up to 350 °C\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eV-segment ball valve\u003c\/strong\u003e is the benchmark modulating control component for the industry's toughest fluids: fiber slurries, abrasive solid-laden slurries, viscous fluids with suspended particles, and high-temperature services where conventional globe valves fail due to wear, fouling, or thermal limitations. Its V-segment provides an equal percentage control characteristic with a shearing effect upon closing — fibers and solids are cut by the V-segment's edge instead of being trapped between the seat and the ball.\u003c\/p\u003e\u003ch3\u003eThe V-segment — why it's different from a standard ball\u003c\/h3\u003e\u003cp\u003eThe standard ball valve has a spherical ball with a circular bore designed for ON\/OFF operation, not for proportional modulating control. Its effective rangeability for proportional control is 3:1 to 5:1. The V-segment ball is different in three fundamental aspects:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEqual percentage control characteristic with 50:1 to 100:1 rangeability:\u003c\/strong\u003e The V-profile generates a predictable relationship between the opening angle and the flow rate — similar to the equal percentage characteristic of a globe valve, but in a quarter-turn format. The PID controller can precisely follow this characteristic across the entire opening range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShearing effect upon closing:\u003c\/strong\u003e The sharp edge of the V-segment cuts fibers, particles, and solids that remain in the flow path when the valve closes — preventing the fouling that would impede the tight shut-off of a standard ball. This is why the V-segment ball is the first choice for cellulose pulp, slurries with fibers, and any fluid where debris would block closure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStability in intermediate positions:\u003c\/strong\u003e It operates stably between 5° and 90° of opening without the cavitation and vibration that a standard ball would generate in partial opening. This stability is essential for the PID control loop to reach and maintain the setpoint without oscillations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStellite (STL) Seat — hardness for severe service\u003c\/h3\u003e\u003cp\u003eStellite (cobalt-chromium-tungsten alloy) is the most wear-resistant seat material available in standard industrial valves:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 40–55 HRC — with greater toughness and impact resistance to particles than hard ceramic coatings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasion Resistance:\u003c\/strong\u003e Excellent resistance to wear from abrasion, erosion, and adhesive wear — the dominant mechanism in fluids with solids and slurries.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Temperature Corrosion Resistance:\u003c\/strong\u003e Stellite's chromium and cobalt content provides oxidation and corrosion resistance up to temperatures where SS316 would begin to degrade.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact Resistance:\u003c\/strong\u003e Unlike brittle ceramic coatings that chip upon impact, Stellite better resists impacts from large particles without fracturing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBall with hard chrome coating (HCr)\u003c\/h3\u003e\u003cp\u003eThe V-segment ball has a hard chrome coating (HCr) over a CF8M (SS316) substrate:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e 65–70 HRC — the highest surface hardness available to resist scratching and wear in each operating cycle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Finish:\u003c\/strong\u003e Ra ≤ 0.2 µm — mirror finish that ensures effective metal-to-metal seal with the Stellite seat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasion Resistance:\u003c\/strong\u003e Hard chrome is the industry standard coating for surfaces subject to abrasive wear — hydraulic rods, rolling mill rollers, compressor cylinders.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHigh Bracket — actuator protection in severe services\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eActuator Thermal Isolation:\u003c\/strong\u003e In high-temperature services (150–350 °C), the high bracket creates the necessary distance between the hot body and the actuator. Without a high bracket, a standard actuator mounted directly on the body would be damaged in weeks in high-temperature service.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection against splashes and vapors:\u003c\/strong\u003e In slurry and pulp services, the high bracket moves the actuator away from the area of greatest exposure, protecting it from corrosion, mechanical jamming, and splash damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Mechanical Alignment:\u003c\/strong\u003e The longer bracket reduces bending stresses on the stem and improves alignment between the valve stem and the actuator shaft — reducing coupling wear and improving positioning repeatability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTwo temperature configurations available\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eStandard Configuration — up to 180 °C\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eO-ring: Viton (FKM)\u003c\/li\u003e\n\u003cli\u003eStem Packing: RTFE\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -29 °C to +180 °C\u003c\/li\u003e\n\u003cli\u003eApplication: Slurries and pulps at moderate temperatures, viscous fluids, corrosive fluids without high temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVery High Temperature Configuration — up to 350 °C\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eO-ring: Expanded graphite\u003c\/li\u003e\n\u003cli\u003eStem Packing: Expanded graphite\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -29 °C to +350 °C\u003c\/li\u003e\n\u003cli\u003eApplication: High-temperature steam, thermal oils, elevated temperature process fluids\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eV-segment ball vs. globe valve — when to choose each\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCriterion\u003c\/th\u003e\n\u003cth\u003eV-Segment Ball\u003c\/th\u003e\n\u003cth\u003eGlobe Valve\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluids with solids and fibers\u003c\/td\u003e\n\u003ctd\u003e✅ First choice — V-shearing effect\u003c\/td\u003e\n\u003ctd\u003e❌ Solids block the trim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlurries and viscous fluids\u003c\/td\u003e\n\u003ctd\u003e✅ First choice — open geometry without cavities\u003c\/td\u003e\n\u003ctd\u003e❌ Body cavities retain solids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePressure drop in open position\u003c\/td\u003e\n\u003ctd\u003e✅ Very low — quarter-turn geometry\u003c\/td\u003e\n\u003ctd\u003eHigh — trim always generates resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHigh temperature (\u0026gt;200 °C)\u003c\/td\u003e\n\u003ctd\u003e✅ Up to 350 °C with graphite\u003c\/td\u003e\n\u003ctd\u003e✅ Up to 450 °C with graphite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProportional modulating control\u003c\/td\u003e\n\u003ctd\u003e✅ Rangeability 50:1 — excellent\u003c\/td\u003e\n\u003ctd\u003e✅ 50:1 — slightly better in clean fluids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClean fluids at low temperature\u003c\/td\u003e\n\u003ctd\u003ePossible — higher cost than globe\u003c\/td\u003e\n\u003ctd\u003e✅ Economical first choice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActuator required\u003c\/td\u003e\n\u003ctd\u003eQuarter-turn — pneumatic or electric\u003c\/td\u003e\n\u003ctd\u003eLinear — diaphragm or piston\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField maintenance\u003c\/td\u003e\n\u003ctd\u003e✅ Lower — simpler quarter-turn design\u003c\/td\u003e\n\u003ctd\u003eHigher — linear trim and stem with more components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eEqual percentage flow characteristic and Cv coefficient\u003c\/h3\u003e\u003cdiv class=\"vs-fc\"\u003e\n\u003cdiv class=\"vs-fc-grid\"\u003e\n\u003cdiv class=\"vs-panel\"\u003e\n\u003cdiv class=\"vs-panel-head\"\u003eInherent Characteristic Curve\u003c\/div\u003e\n\u003cdiv class=\"vs-chart-area\"\u003e\n\u003cdiv class=\"vs-canvas-box\"\u003e\u003ccanvas id=\"vs-cv-chart\" role=\"img\" aria-label=\"Equal percentage curve of segmented valve. At 25% open it delivers ~5% of max Cv, at 50% it delivers ~20%, and at 80% it delivers ~60%.\"\u003eEqual percentage curve: at 50% opening it delivers ~20% of max Cv.\u003c\/canvas\u003e\u003c\/div\u003e\n\u003cp class=\"vs-axis-note\"\u003eX-axis: % opening · Y-axis: Cv (% of maximum)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vs-kps\"\u003e\n\u003cdiv class=\"vs-kp\"\u003e\n\u003cp class=\"vs-kp-pct\"\u003e25%\u003c\/p\u003e\n\u003cp class=\"vs-kp-cv\"\u003e≈ 5% Cv\u003c\/p\u003e\n\u003cp class=\"vs-kp-desc\"\u003eFine control, low flow\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vs-kp\"\u003e\n\u003cp class=\"vs-kp-pct\"\u003e50%\u003c\/p\u003e\n\u003cp class=\"vs-kp-cv\"\u003e≈ 20% Cv\u003c\/p\u003e\n\u003cp class=\"vs-kp-desc\"\u003eOptimal control zone\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vs-kp\"\u003e\n\u003cp class=\"vs-kp-pct\"\u003e80%\u003c\/p\u003e\n\u003cp class=\"vs-kp-cv\"\u003e≈ 60% Cv\u003c\/p\u003e\n\u003cp class=\"vs-kp-desc\"\u003eHigh capacity, recommended limit\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vs-explain\"\u003eThe \u003cstrong\u003eequal percentage\u003c\/strong\u003e characteristic ensures that each equal increment of opening produces a constant percentage increase in flow rate — stable control over the entire range with particular precision at low openings. Ideal for processes with \u003cstrong\u003ehigh differential pressure variation\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vs-panel\"\u003e\n\u003cdiv class=\"vs-panel-head\"\u003eMax Cv by size\u003c\/div\u003e\n\u003cdiv class=\"vs-table-scroll\"\u003e\u003ctable class=\"vs-cv-tbl\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eMax Cv\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN25\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN32\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e56\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN40\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e94\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN50\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e152\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN65\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e262\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN80\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e358\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN100\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e540\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN125\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e906\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN150\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e1,424\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN200\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e2,176\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN250\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e3,532\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN300\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e5,732\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN350\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e8,245\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN400\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e10,651\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN450\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e12,878\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDN500\u003c\/td\u003e\n\u003ctd class=\"cv-red\"\u003e16,343\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"vs-note\"\u003e* Cv is the flow rate in GPM of water at 60°F (15.6°C) with a 1 psi pressure drop at 100% open valve. Manufacturer's reference values.\u003c\/p\u003e\n\u003c\/div\u003e\u003cp\u003e \u003c\/p\u003e\u003ch3\u003eAutomation — 4–20 mA positioner for modulating control\u003c\/h3\u003e\u003cp\u003eThe V-segment ball is a modulating control component — its value lies in operating at precise intermediate positions, not in ON\/OFF mode. To take advantage of its control capability, the assembly must include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePneumatic quarter-turn actuator + 4–20 mA electro-pneumatic positioner:\u003c\/strong\u003e Standard configuration for modulating control. The positioner receives the signal from the PID controller and precisely positions the V-segment. For high-temperature services, the pneumatic actuator with a high bracket is the first choice — no electronic components exposed to the heat of the body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4–20 mA modulating electric actuator:\u003c\/strong\u003e For installations without a compressed air network. The electric actuator with a 4–20 mA signal positions the V-segment directly without an additional positioner. Verify temperature compatibility at the installation point — the high bracket helps to isolate the actuator from the heat of the body.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHART digital positioner:\u003c\/strong\u003e For control loops with online diagnostics, remote calibration, and communication with DCS or SCADA systems. Allows monitoring the actual valve position, detecting seat wear, and performing partial stroke tests (PST) without interrupting the process.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e V-segment ball, quarter-turn\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Design:\u003c\/strong\u003e Two-piece body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e CF8M (ASTM A351) — cast SS316 equivalent\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eV-Segment (ball):\u003c\/strong\u003e CF8M (SS316) with hard chrome coating (HCr)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeat:\u003c\/strong\u003e SS316 + Stellite (STL) — metal-to-metal seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStem:\u003c\/strong\u003e SS316\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eO-ring:\u003c\/strong\u003e Viton up to 180 °C · Expanded graphite up to 350 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStem Packing:\u003c\/strong\u003e RTFE up to 180 °C · Expanded graphite up to 350 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e ANSI 150 RF flanges — face-to-face ASME B16.10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Drilling:\u003c\/strong\u003e ASME B16.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Pressure:\u003c\/strong\u003e ANSI 150 — up to 290 psi (20 bar) at 38 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -29 °C to +180 °C (standard) · -29 °C to +350 °C (high temperature)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Characteristic:\u003c\/strong\u003e Equal percentage — effective rangeability 50:1 to 100:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActuator Mounting:\u003c\/strong\u003e ISO 5211\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBracket:\u003c\/strong\u003e High — thermal insulation and actuator protection included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eMain Industries and Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulp and Paper:\u003c\/strong\u003e Control of cellulose pulp in digesters, washers, refiners, and distribution systems. Cellulose pulp (2–15% solids, fibers up to 3 mm) is the fluid for which the V-segment ball was originally developed. Control of black liquor, white liquor, and bleaching fluids in the Kraft process.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWastewater Treatment:\u003c\/strong\u003e Control of primary, activated, and thickened sludge in municipal and industrial plants. Sludge with 2–8% solids and abrasive fine sand particles are incompatible with conventional globe valves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMining — Mineral Slurries:\u003c\/strong\u003e Flow control in flotation circuits, thickeners, and filters. Mineral slurries with 30–60% solids and abrasive quartz and pyrite particles are the most demanding service — the hard chrome of the ball and the Stellite of the seat are the correct materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Plants — Steam and Condensate:\u003c\/strong\u003e Control of high-temperature process steam, condensate regulation, and boiler water control in thermoelectric and cogeneration plants. The high-temperature configuration with graphite covers up to 350 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical Industry:\u003c\/strong\u003e Control of viscous fluids with solids in polymerization reactors, neutralization systems, and intermediate product transfer lines. The CF8M body resists corrosive fluids and Stellite withstands the abrasion of suspended particles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Industry:\u003c\/strong\u003e Control of cooling water with suspended solids, hydraulic oils contaminated with metallic particles, and fluids in environments with intense mechanical vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFood and Beverage — Non-Sanitary Auxiliary Services:\u003c\/strong\u003e Control of heating steam, caustic CIP cleaning solutions, and auxiliary process fluids where chemical resistance and durability in frequent cycles are required.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-de-bola-segmentada-cuerpo-SS316-ansi-150-pbfv.pdf?v=1779822529\" target=\"_blank\" title=\"V-Segment Ball Valve SS316 ANSI 150 Flange Data Sheet - Cematic\" rel=\"noopener\"\u003e\u003cspan style=\"color: rgb(181, 33, 33);\"\u003e\u003cstrong\u003eData Sheet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Cematic","offers":[{"title":"RTFE Packing \/ 1\"","offer_id":51239800537401,"sku":"PBFV106","price":6994.26,"currency_code":"MXN","in_stock":true},{"title":"RTFE Packing \/ 1 1\/2\"","offer_id":51239800570169,"sku":"PBFV108","price":8159.97,"currency_code":"MXN","in_stock":true},{"title":"RTFE Packing \/ 2\"","offer_id":51239800602937,"sku":"PBFV110","price":9953.37,"currency_code":"MXN","in_stock":true},{"title":"RTFE Packing \/ 2 1\/2\"","offer_id":51239800635705,"sku":"PBFV112","price":13809.18,"currency_code":"MXN","in_stock":true},{"title":"RTFE Packing \/ 3\"","offer_id":51239800668473,"sku":"PBFV114","price":16319.94,"currency_code":"MXN","in_stock":true},{"title":"RTFE Packing \/ 4\"","offer_id":51239800701241,"sku":"PBFV118","price":21879.48,"currency_code":"MXN","in_stock":true},{"title":"RTFE Packing \/ 6\"","offer_id":51239800734009,"sku":"PBFV124","price":36585.36,"currency_code":"MXN","in_stock":true},{"title":"RTFE Packing \/ 8\"","offer_id":51239800766777,"sku":"PBFV126","price":52456.95,"currency_code":"MXN","in_stock":true},{"title":"Graphite Packing \/ 1\"","offer_id":51239800799545,"sku":"PBFVH106","price":7980.63,"currency_code":"MXN","in_stock":true},{"title":"Graphite Packing \/ 1 1\/2\"","offer_id":51239800832313,"sku":"PBFVH108","price":9594.69,"currency_code":"MXN","in_stock":true},{"title":"Graphite Packing \/ 2\"","offer_id":51239800865081,"sku":"PBFVH110","price":11746.77,"currency_code":"MXN","in_stock":true},{"title":"Graphite Packing \/ 2 1\/2\"","offer_id":51239800897849,"sku":"PBFVH112","price":15961.26,"currency_code":"MXN","in_stock":true},{"title":"Graphite Packing \/ 3\"","offer_id":51239800930617,"sku":"PBFVH114","price":19368.72,"currency_code":"MXN","in_stock":true},{"title":"Graphite Packing \/ 4\"","offer_id":51239800963385,"sku":"PBFVH118","price":25914.63,"currency_code":"MXN","in_stock":true},{"title":"Graphite Packing \/ 6\"","offer_id":51239800996153,"sku":"PBFVH124","price":45821.37,"currency_code":"MXN","in_stock":true},{"title":"Graphite Packing \/ 8\"","offer_id":51239801028921,"sku":"PBFVH126","price":69404.58,"currency_code":"MXN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-de-bola-segmentada-inoxiable_316-dn-40.jpg?v=1765998738"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/collections\/valvula-de-bola-segmentada-inoxiable316-cematic.jpg?v=1773168962","url":"https:\/\/cematic.com\/collections\/valvulas-bola-segmentada.oembed","provider":"Cematic","version":"1.0","type":"link"}