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Dorot

Pre-Action Valves

DE\EL\PORV\PR-DN-MR - DOUBLE-INTERLOCK PRE-ACTION, PRESSURE REDUCING MANUAL-RESET, ELECTRIC-PNEUMATIC RELEASE SYSTEM

Double-Interlock Pre-action, Pressure Reducing Manual-Reset, Electric-Pneumatic Release System

  • Model 68-DE\EL\PORV\PR-DN
  • Model 30U-DE\EL\PORV\PR-DN

Electrically and Pneumatically, Pilot-controlled, Deluge/Pre-Action, Double-Interlocked valve, actuated by the pipeline pressure. The valve is closed in its normal, set position and opens when the pressure drops in a gas-pressurized auxiliary sensor-line, sensed by the relay-valve, and a solenoid-valve is energized. When tripped, the valve regulates to a steady, pre-set downstream pressure, regardless of upstream pressure or flow rate fluctuations. The valve must be manually reset following actuation. An emergency manual release valve is fitted as standard.

 

Features:

  • UL Listed
  • Simple structure
  • Manual reset

 

Applicable for:

  • Double-Interlock Pre-Action
  • Water, Sea water and Foam
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