Pressure Sustaining Pilot Valve Model #3

This pilot integrates all principal functions of a 2-Way control circuit in 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
• Direct pressure gauge installation

Typical Applications

• Pressure Relief/Sustaining Valve sizes 6-14” (Standard Model #3)
• Differential Pressure Sustaining Valve sizes 6-14” (Modified to differential sensing #3D)
• Surge Anticipating Valve sizes 11/2-4” as high pressure pilot (Standard Model #3)