Description
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)
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
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