The diaphragm actuator is used for reciprocating movement of the valve stem. It is used both on regulating and shut-off valves.
It operates at the instrumentation air pressure of 4-6 kg/cm2. MIM produced by NPO Regulator has hysteresis less than 1% due to the use of high quality low friction materials.
Anticorrosion resistance is ensured by powder coating, including all internal cavities of the mechanism. The three-layer rubber membrane retains its serviceability at ambient air temperature -65...+75C.
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