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Pressure Reducing Valves Diaphragm Actuated

Water
GA diaphragm actuated pressure reducing valves are used to reduce a higher, fluctuating inlet pressure to a lower, steady outlet pressure regardless of variations in demand. The valve’s pilot system senses the outlet (downstream) pressure and modulates the main valve to allow enough flow to satisfy demand without letting the downstream pressure rise above its pilot setting.  The valve will close drop tight during periods of zero demand to prevent over pressurization of the downstream system.  GA diaphragm actuated pressure reducing valves can be supplied with additional functions such as solenoid shutoff, sustaining and/or check as well as other optional features.  See individual Data Sheets for details.

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General information

Product features and benefits

  • Conforms to AWWA Standard C530
  • NSF-61 Certified for Contact with Drinking Water
  • NSF-372 Certified Lead Free
  • 1¼” to 16” Globe, 1¼” to 10” Angle
  • 3” to 10” Reduced Port Globe
  • NPT to 3”, Class 150 or 300 flanged 1½” to 16”
  • Standard Features
    • Fusion Bond Epoxy Coated
    • Opening Speed Control (1¼” to 4”)
    • Wye Strainer
    • Pilot Isolating Valves
    • Inlet and Outlet Pressure Gauges

Material

  • Body, Cover – Ductile Iron
  • Trim – Stainless Steel
  • Seat – Buna-N Rubber
  • Diaphragm – Reinforced Buna-N Rubber
  • Cover Fasteners – Stainless Steel

Corrosion protection

  • Fusion Bond Epoxy Coating

Product versions

Basic Pressure Reducing Valve

Product features and benefits
  • Normally open, closes on rising outlet pressure
  • Pilot senses changes in outlet pressure as demand varies and modulates main valve to satisfy demand while maintaining a steady outlet pressure
  • Main valve will close drip tight during periods of zero demand
  • Can be supplied with the following additional function:
    • Check Feature – prevents reverse flow through valve

Pressure Reducing and Solenoid Shutoff Valve

Product features and benefits
  • Normally open, closes on rising outlet pressure
  • Pilot senses changes in outlet pressure as demand varies and modulates main valve to satisfy demand while maintaining a steady outlet pressure
  • Main valve will close drip tight during periods of zero demand
  • Can be closed, or prevented from opening, anytime by remote electrical signal
  • Can be supplied with the following additional function:
    • Check Feature – prevents reverse flow through valve

Pressure Reducing and Sustaining Valve

Product features and benefits
  • Normally closed, opens when inlet pressure rises above the setting of the sustaining pilot
  • As long as the inlet pressure is above the setting of the sustaining pilot, the valve will reduce the higher upstream pressure to lower, steady downstream pressure.  Pilot senses changes in outlet pressure as demand varies and modulates main valve to satisfy demand while maintaining a steady outlet pressure
  • Should inlet pressure fall to the setting of the sustaining pilot, it overrides the reducing pilot and throttles to sustain the inlet pressure.  The valve will close if the inlet pressure falls below the minimum sustained pressure.
  • Can be supplied with the following additional function:
    • Check Feature – prevents reverse flow through valve

Pressure Reducing, Sustaining and Solenoid Shutoff Valve

Product features and benefits
  • Normally closed, opens when inlet pressure rises above the setting of the sustaining pilot
  • As long as the inlet pressure is above the setting of the sustaining pilot, the valve will reduce the higher upstream pressure to lower, steady downstream pressure.  Pilot senses changes in outlet pressure as demand varies and modulates main valve to satisfy demand while maintaining a steady outlet pressure
  • Should inlet pressure fall to the setting of the sustaining pilot, it overrides the reducing pilot and throttles to sustain the inlet pressure.  The valve will close if the inlet pressure falls below the minimum sustained pressure.
  • Can be closed, or prevented from opening, anytime by remote electrical signal
  • Can be supplied with the following additional function:
    • Check Feature – prevents reverse flow through valve
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Address

VAG USA, LLC
9025 Marshall Road
Cranberry Township, PA 16066
United States
+1 724-776-1020 +1 724-776-1254 Write e-mail