EMERSON
Endkontrolle
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Fisher™ Type P539A Pneumatic Actuator

P539A opens or closes N550/N551 ESVs locally or remotely. Loss of pressure closes the valve with spring assistance.

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.

Hauptmerkmale

  • 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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