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Fisher™ Type P539A Pneumatic Actuator
Fisher™ Type P539A Pneumatic Actuator
Type P539A pneumatic actuator permits opening and closing Fisher N550/N551 Series Snappy Joe emergency shutoff valves (ESVs) both at the valve with the use of a pneumatic 4-way valve and from a remote location. The actuator opens the valve when pressure is applied. Upon loss of pressure, the N550/N551 Series closes, assisted by the spring in the pneumatic actuator.
Caratteristiche principali
- Remotely Operate Emergency Shutoff Valves on Stationary Storage Tanks at Bulk Plants
- Fusible Element Provides Thermal Release
- Return Mechanism: Spring only no air required
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