{"product_id":"valvula-control-globo-actuador-electrico-lineal","title":"Globe Type Control Valve with Linear Electric Actuator | 4–20 mA | ANSI 150 Flange","description":"\u003ch2\u003eWCB Globe Control Valve — Modulating Linear Electric Actuator with 4–20 mA Signal and ANSI 150 Flange\u003c\/h2\u003e\n\n\u003cp\u003e\n  The \u003cstrong\u003eWCB globe type control valve with linear electric actuator\u003c\/strong\u003e is the solution for flow, temperature, and pressure control loops in installations where compressed air is not available — or where direct digital integration with SCADA, DCS, or BMS systems is required without additional signal converters. The linear electric actuator receives the 4–20 mA signal from the PID controller and positions the globe plug at any point in the stroke with high repeatability, without the need for a separate electro-pneumatic positioner or compressed air supply.\n\u003c\/p\u003e\n\u003cp\u003e\n  The assembly includes a WCB globe body with ANSI 150 flanges, a linear electric actuator with a 4–20 mA input signal, 4–20 mA position feedback, IP67 protection, and limit switch signals — all assembled, calibrated, and tested at the Cematic workshop before shipping.\n\u003c\/p\u003e\n\n\u003ch3\u003eThe advantage of linear electric actuators over pneumatic diaphragm actuators\u003c\/h3\u003e\n\u003cp\u003e\n  The globe valve has historically been a pneumatic control component — the diaphragm actuator is economical and precise when compressed air is available. The linear electric actuator is the correct alternative when the process has any of these conditions:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eNo compressed air network:\u003c\/strong\u003e The most frequent reason. Buildings, municipal water treatment plants, remote installations, HVAC systems, and many modern process plants do not have instrumented compressed air networks — or the control point is too far from the existing network. The electric actuator only requires a power cable and a signal cable.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eDirect digital integration:\u003c\/strong\u003e Modern electric actuators with Modbus RTU or HART protocol allow direct integration with the control system without intermediate signal converters — the actual valve position, fault alarms, and actuator diagnostics are available in the SCADA system without additional hardware.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eHigher positioning accuracy:\u003c\/strong\u003e The stepper motor or servo motor of the electric actuator can position the plug with 0.1% stroke resolution — superior to most pneumatic diaphragm actuators with conventional analog positioners.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eNo continuous air consumption:\u003c\/strong\u003e The pneumatic actuator continuously consumes compressed air to maintain position against process variations. The electric actuator consumes energy only during movement — reducing operating costs in systems with many control valves.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eLess maintenance:\u003c\/strong\u003e No electro-pneumatic positioner, no air filter regulator, no signal tubing — the electric actuator has fewer components susceptible to failure than the equivalent pneumatic assembly.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eConstruction materials\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody:\u003c\/strong\u003e WCB carbon steel (ASTM A216 Gr. WCB) — mechanical resistance for steam, hot water, gas, and general process fluids at high pressure and temperature\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eTrim (plug and seat):\u003c\/strong\u003e SS316 stainless steel — corrosion resistance on control surfaces in contact with the fluid\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eStem packing:\u003c\/strong\u003e Standard expanded graphite for high temperatures; PTFE available for aqueous fluids at moderate temperatures\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eConnection:\u003c\/strong\u003e ANSI 150 raised face (RF) flanges, ASME B16.5 drilling\u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eLinear electric actuator:\u003c\/strong\u003e\n    \u003cul\u003e\n\n      \u003cli\u003eInput signal: 4–20 mA modulating\u003c\/li\u003e\n\n      \u003cli\u003ePosition feedback: 4–20 mA\u003c\/li\u003e\n\n      \u003cli\u003eProtection: IP67 — submersible up to 1 meter, suitable for frequent washing\u003c\/li\u003e\n\n      \u003cli\u003ePower supply: 220 VAC or 24 VDC depending on model\u003c\/li\u003e\n\n      \u003cli\u003eLimit switches: integrated for open\/closed position signal to the PLC\u003c\/li\u003e\n\n    \u003c\/ul\u003e\n\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 Straight-through globe, linear motion\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eConnection:\u003c\/strong\u003e ANSI 150 RF flanges — face-to-face according to ASME B16.10 Series 1\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eBody material:\u003c\/strong\u003e WCB (ASTM A216)\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eTrim:\u003c\/strong\u003e SS316\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eStem packing:\u003c\/strong\u003e Standard graphite; PTFE available\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eNominal diameters:\u003c\/strong\u003e ½\" (DN15) to 4\" (DN100)\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eNominal pressure:\u003c\/strong\u003e ANSI 150 — up to 19.6 bar at ambient temperature\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e Up to +425 °C with graphite packing\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eFlow characteristic:\u003c\/strong\u003e Standard equal percentage\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eInput signal:\u003c\/strong\u003e 4–20 mA modulating\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003ePosition feedback:\u003c\/strong\u003e 4–20 mA\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eActuator protection:\u003c\/strong\u003e IP67\u003c\/li\u003e\n\n  \u003cli\u003e\n\n\u003cstrong\u003eDesign standard:\u003c\/strong\u003e IEC 60534 \/ ASME B16.34\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eFlow coefficient Cv by diameter\u003c\/h3\u003e\n\u003cp\u003e\n  The normal operating Cv should be between 20% and 80% of the maximum Cv to ensure control stability throughout the operating range.\n\u003c\/p\u003e\n\u003ctable\u003e\n\n  \u003cthead\u003e\n\n    \u003ctr\u003e\n\n      \u003cth\u003eNominal Diameter\u003c\/th\u003e\n\n      \u003cth\u003eMaximum Cv\u003c\/th\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/thead\u003e\n\n  \u003ctbody\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e½\" (DN15)\u003c\/td\u003e\n\n      \u003ctd\u003e4\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e¾\" (DN20)\u003c\/td\u003e\n\n      \u003ctd\u003e6.3\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e1\" (DN25)\u003c\/td\u003e\n\n      \u003ctd\u003e10\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e1½\" (DN40)\u003c\/td\u003e\n\n      \u003ctd\u003e24\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e2\" (DN50)\u003c\/td\u003e\n\n      \u003ctd\u003e44\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e3\" (DN80)\u003c\/td\u003e\n\n      \u003ctd\u003e99\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003e4\" (DN100)\u003c\/td\u003e\n\n      \u003ctd\u003e175\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\u003cp\u003e\n  \u003cem\u003eNot sure about the correct diameter? Use the \u003ca href=\"https:\/\/cematic.com.mx\/pages\/calculadora-cv-valvulas-de-control\"\u003eCv Calculator →\u003c\/a\u003e or consult our technical team at no cost.\u003c\/em\u003e\n\u003c\/p\u003e\n\n\u003ch3\u003eFail-safe — behavior upon loss of electrical power\u003c\/h3\u003e\n\u003cp\u003e\n  Unlike pneumatic actuators whose fail-safe mode is defined by the mechanical spring, linear electric actuators have fail-safe options that depend on the actuator design:\n\u003c\/p\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eFail-Last:\u003c\/strong\u003e The integrated actuator brake maintains the plug's position at the last value before power loss. This is the standard configuration — correct when the last control position is the safe condition for the process.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eFail-Close with spring or capacitor:\u003c\/strong\u003e Available in models with a mechanical return spring or a backup capacitor — the actuator moves the plug to the closed position upon power loss. For services where fluid cutoff is the mandatory safety state. Consult for availability.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\n  For services where mechanical spring fail-safe NC is a critical safety requirement without electronic dependence, the \u003ca href=\"\/products\/valvula-control-globo-wcb-brida-ansi-150\"\u003econtrol valve with pneumatic diaphragm actuator →\u003c\/a\u003e is the most reliable option.\n\u003c\/p\u003e\n\n\u003ch3\u003eFluid compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e✅ Saturated and superheated steam up to 425 °C with graphite packing\u003c\/li\u003e\n\n  \u003cli\u003e✅ Hot water and boiler water\u003c\/li\u003e\n\n  \u003cli\u003e✅ Natural gas, LPG, and dry industrial gases\u003c\/li\u003e\n\n  \u003cli\u003e✅ Crude oil, oils, and hydrocarbon condensates\u003c\/li\u003e\n\n  \u003cli\u003e✅ Industrial process water with moderate dissolved salts\u003c\/li\u003e\n\n  \u003cli\u003e✅ Process fluids in industrial chemistry and petrochemicals\u003c\/li\u003e\n\n  \u003cli\u003e⚠️ Fluids with high chlorides at high temperatures: check with technical team\u003c\/li\u003e\n\n  \u003cli\u003e❌ Concentrated acids, HF: use SS316 body or special materials\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectric vs. pneumatic actuator — selection guide for globe control valves\u003c\/h3\u003e\n\u003ctable\u003e\n\n  \u003cthead\u003e\n\n    \u003ctr\u003e\n\n      \u003cth\u003eCriterion\u003c\/th\u003e\n\n      \u003cth\u003eLinear Electric Actuator ← This Product\u003c\/th\u003e\n\n      \u003cth\u003ePneumatic Diaphragm Actuator\u003c\/th\u003e\n\n    \u003c\/tr\u003e\n\n  \u003c\/thead\u003e\n\n  \u003ctbody\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eRequires compressed air\u003c\/td\u003e\n\n      \u003ctd\u003e✅ No — only electrical wiring\u003c\/td\u003e\n\n      \u003ctd\u003eYes — 1.4–6 bar air network at the point\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003ePositioning accuracy\u003c\/td\u003e\n\n      \u003ctd\u003e✅ High — 0.1% stroke resolution\u003c\/td\u003e\n\n      \u003ctd\u003eHigh with digital HART positioner\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eNative Modbus \/ HART integration\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Available on the actuator\u003c\/td\u003e\n\n      \u003ctd\u003eRequires additional digital positioner\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eMechanical spring fail-safe\u003c\/td\u003e\n\n      \u003ctd\u003e⚠️ Only in models with spring or capacitor\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Standard — mechanical spring without electronics\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eResponse speed\u003c\/td\u003e\n\n      \u003ctd\u003eModerate — 30 to 120 sec full stroke\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Fast — 5 to 30 sec full stroke\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eContinuous power consumption\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Only during movement\u003c\/td\u003e\n\n      \u003ctd\u003eContinuous compressed air consumption\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eMaintenance\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Lower — no positioner, filter, or air tubing\u003c\/td\u003e\n\n      \u003ctd\u003ePositioner + filter regulator + condensate drains\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eAssembly cost\u003c\/td\u003e\n\n      \u003ctd\u003eHigher — linear electric actuator is more expensive\u003c\/td\u003e\n\n      \u003ctd\u003e✅ Lower when pneumatic infrastructure is available\u003c\/td\u003e\n\n    \u003c\/tr\u003e\n\n    \u003ctr\u003e\n\n      \u003ctd\u003eInstallation in remote area without air\u003c\/td\u003e\n\n      \u003ctd\u003e✅ First choice\u003c\/td\u003e\n\n      \u003ctd\u003e❌ Requires laying air piping\u003c\/td\u003e\n\u003c!--nl]--\u003e    \u003c\/tr\u003e\n\n  \u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003ch3\u003eMain industries and applications\u003c\/h3\u003e\n\u003cul\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eMunicipal water treatment plants and WTTPs:\u003c\/strong\u003e The most frequent application of electric actuators in Mexico for globe control valves. Water operating agencies (SACMEX, CONAGUA, SIAPA, regional OOAs) use plants without instrumented compressed air networks — the electric actuator with Modbus integrates directly with the municipal SCADA. Control of treatment reagent flow and pressure regulation in distribution networks.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eIndustrial HVAC and buildings:\u003c\/strong\u003e Control of steam and hot water in heating systems for hospitals, hotels, shopping centers, and office buildings where pneumatic infrastructure does not exist and BMS (Building Management System) with BACnet or Modbus is the integration standard.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003ePharmaceutical industry — plant services:\u003c\/strong\u003e Control of heating steam in autoclaves, sterilizers, and hot water systems where the IP67 rating of the actuator allows frequent washing in production areas. Modbus integration with the pharmaceutical process control system (DCS or SCADA) without additional converters simplifies system validation.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eRemote installations without pneumatic infrastructure:\u003c\/strong\u003e Water wells, remote pumping stations, decentralized treatment plants, and any installation where laying a compressed air network has a disproportionate cost compared to laying an electrical cable.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eSolar and renewable energy generation:\u003c\/strong\u003e Control of process fluids in solar thermal, geothermal, and biomass energy plants where compressed air infrastructure is not part of the original plant design.\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n\n    \u003cstrong\u003eFood industry — washdown areas:\u003c\/strong\u003e The IP67 protection of the actuator allows installation in areas with frequent high-pressure washdown — food and beverage processing rooms where conventional pneumatic actuators require additional protective covers.\n  \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e\n  For the complete category of control valves, see \u003ca href=\"\/collections\/valvulas-de-control\"\u003eCematic Control Valves →\u003c\/a\u003e\n\u003c\/p\u003e\n\n\n\u003cul\u003e\n\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula-de_-control-electrica-actuador-lineal.pdf?v=1771622277\" title=\"Technical Data Sheet Cematic Linear Electric Control Valve for Flow Regulation\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan style=\"color: #ba2121;\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Cematic","offers":[{"title":"2\"","offer_id":51959011836217,"sku":"PCVK2EA","price":11415.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/3917\/1508\/files\/valvula_globo_actuador_el_ctrico_modulante_4-20_mA.jpg?v=1776098166","url":"https:\/\/cematic.com\/products\/valvula-control-globo-actuador-electrico-lineal","provider":"Cematic","version":"1.0","type":"link"}