Pressure Relief Pilot Valve Model #3PB


This 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.

  • Pressure Relief with internal or external pressure sensing
  • Available with differential pressure sensing
  • Pressure Relief valve sizes 1½-6” (Standard model #3PB)
  • Differential Pressure sustaining valves, sizes 1½-6” (with sealed cover)
  • Direct Acting Pressure Relief valve for Fusible Plugs pilot line
English Pressure Relief Pilot Valve Model #3PB Product Page