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Fisher 3620J electro-pneumatic, single-acting positioners are used with rotary actuators to accurately position control valves used in throttling applications. These rugged positioners provide a valve position proportional to a pneumatic input signal and mounts integrally to the actuator housing.
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Manufacturer: Fisher
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Valve Type: Positioners
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Sub-Type: Fisher Positioners
- The positioner provides accurate, fast response and can withstand the vibrations of most plant environments.
- With the cover removed, zero span and cross-over adjustments are easily accessible and can be made with a screw driver.
- Easily adjustable minor loop gain fine tunes the positioner to optimize dynamic response for each specific actuator size and application.
- Changes in supply pressure have minimal effect on positioner operation.
- Case, components, and gasket materials withstand harsh environments. Positioner bleed air purges internal parts and actuator housing for additional protection.
- Simple adjustments permit switching between direct and reverse action; no additional parts are required.
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