Fire Protection
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Pressure Sustaining Pilot Valve Model #3UL

This pilot integrates all the principal functions of a two-way control circuit into a single assembly. It is a direct acting valve, actuated by a pressure responsive diaphragm, which tends to reach equilibrium with the set spring force. When used in a pressure relief/sustaining circuit, the pilot modulates open as upstream pressure rises above set point. An integral needle valve acts as an upstream flow restrictor as well as a closing speed control.

Features and Benefits


  •  Integral needle valve
  •  Internal or external pressure sensing
  •  Differential pressure sensing (Option)

Typical Applications

  •  Pressure relief valve (Standard model #3)
  •  Differential Pressure sustaining valve

     (Modified to differential sensing #3D)

  •  Pump suction control valve

     (Modified to external sensing #3R)

  •  UL Listed when installed on

     Bermad Models 430-UF, 730-UF & 730R-UL

  •  FM Approved when installed on Bermad Model 430-UF & 730-UF
  •  VdS Approved when installed on Bermad Model 436-VDS