PRODUCT INFORMATION

840 – High Pressure Booster Pump Control Valve, Active Check Valve

The Model 840 High Pressure, Booster Pump Control Valve is a hydraulically operated, piston actuated active check valve that opens fully or shuts off in response to electric signals. It isolates the pump from the system during pump starting and stopping, to prevent pipeline surges. Model 840 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)

FEATURES & BENEFITS

The Model 840 High Pressure, Booster Pump Control Valve is a hydraulic operated, piston actuated active check valve that opens fully or shuts off in response to electric signals. It isolates the pump from the system during pump starting and stopping, to prevent pipeline surges.

• Line pressure driven
  • Independent operation
  • No motor required
  • Long term drip tight sealing
• Solenoid controlled
  
  • Low cost wiring
  • Wide ranges of pressures and voltages
  • Normally open or Normally closed
• Check feature (spring loaded type)
  
  • Replaces lines sized check valve
  • Fail-safe mechanical closure
• In-Line serviceable - Easy maintenance
• Double chamber
  • Full powered opening (option b) and closing
  • Non-slam opening and closing characteristic
• Balanced seal disk - High flow capacity
• Flexible design - Easy addition of hydraulic features

Major Additional Features

• Pressure sustaining - 843
• Pressure reducing - 842
• Flow control - 847 - U
• Pump circulation control - 848
• Deep well pump electric control - 845
• Full powered opening & closing - 840 - B
• Electronic control - 840 - 18
• Pressure sustaining & pressure reducing - 843 - 8Q

LITERATURE

840 – High Pressure Booster Pump Control Valve, Active Check Valve Brochure