Bermad WW-743 Large Metal Hydraulic Booster Pump Control/Pressure Sustaining Valve

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. Model 743 isolates systems from the effects of pump starts and stops for:

• Solitary single speed pumps
• Battery of single speed pumps (add & switch)
• Battery of variable speed pumps (add)
• Pump overload and cavitation protection
• Controlled pipeline fill-up

FEATURES

• Line pressure driven
  • Independant 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