Fisher 3661 Electro-Pneumatic Valve Positioner with 4-20mA for Single-Acting Sliding-Stem Valves
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Product Overview The Fisher 3661 is an electro-pneumatic single-acting valve positioner built for sliding-stem valves in throttling service. It delivers a valve position proportional to a standard milliampere DC input signal received from a control device. The design provides accurate, fast-responding instrumentation able to withstand the vibrations of most plant environments. Low steady-state air consumption supports efficient operation. Easily adjustable gain and damping
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