Booster Pump Control and Pressure Sustaining Valve Active Check Valve IR-743

The Model 743 Booster Pump Control & Pressure Sustaining Valve is a hydraulically operated, diaphragm actuated active check valve that opens or shuts off in response to electric signals. It isolates the pump from the system during pump starting and stopping, to prevent pipeline surges. While open, it sustains minimum discharge pressure regardless of fluctuating flow.

Product Features & Benefits

Line pressure driven

  • Independent operation
  • No motor required
  • Long term drip tight sealing

Solenoid controlled

  • Low power consumption
  • Low cost wiring
  • Wide ranges of pressures and voltages
  • Normally Open or Normally Closed

Check feature (spring loaded type)

  • Replaces line sized check valve
  • Fail-safe mechanical closure

In-line serviceable – Easy maintenance

Double chamber design

  • Non-slam opening and closing characteristic
  • Protected diaphragm

Balanced seal disk – High flow capacity

Flexible design – Easy addition of hydraulic features

Typical Product Applications

■ Pump differential pressure sustaining – 743-06
■ Electronic control – 743-18
■ Pressure sustaining & Pressure reducing – 743-2Q

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