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2E859602202

Key Specifications / Parameters Parameter Description / Value Part Number 2E859602202 Product Type Diaphragm (actuator component) Material Nitrile rubber (NBR) Compatible Actuator Fisher Type 667 (and also cited for Type 657) Actuator Size Size 45/50 (as indicated) Dimensions Diameter approx 16″ (≈406 mm), with 20 holes across the periphery Application Replacement part for piston‑style/bellows‑style pneumatic actuators in control valves

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The 2E859602202 is a replacement diaphragm designed for use in Fisher pneumatic actuators, specifically the Type 667 (and also compatible with Type 657) actuator series. It is constructed of nitrile rubber and is sized for actuator “Size 45/50”. The diaphragm provides the flexible sealing and motion element between the actuator’s air chamber and the valve linkage, enabling actuation.