Fisher 3590 Valve Positioner Manual Here

The Fisher 3590 is a . It receives a 3–15 psig (0.2–1.0 bar) or split-range input signal and delivers an output pressure to the actuator to precisely position the valve stem. It is commonly used with sliding-stem valves and can be adapted for rotary actuators.

Common issues include calibration drift or plugged nozzle/flapper assemblies. If the positioner fails to respond, check for debris in the air supply or a faulty I/P converter. fisher 3590 valve positioner manual

-40° to 150°F (-40° to 66°C).