Description
740Q – Booster Pump Control Valve, Quick Active Check Valve AS5081
The Model 740Q Booster Pump Control Valve is a double chambered, hydraulically operated, diaphragm actuated active check valve that opens fully or shuts off in response to electric signals. The valve isolates the pump from the system during pump starting and stopping to prevent pipeline surges, making it an ideal solution for water hammer prevention on pump stop. The model 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)
- Line pressure driven
- Long term drip tight sealing
- No motor required
- Solenoid controlled
- 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
- Full powered opening (option b) and closing
- Non-slam opening and closing characteristics
- Protected diaphragm
- Balanced seal disk – High flow capacity
- Flexible design – Easy addition of hydraulic features
Major Additional Features
- Pressure sustaining – 743
- Pressure reducing – 742
- Flow control – 747 – U
- Pump circulation control – 748
- Deep well pump electric control – 745
- Full powered opening & closing – 740 – B
- Electronic control – 740 – 18
- Pressure sustaining & Pressure reducing – 743 – 2Q
The Mode; 740Q is a solenoid controlled valve equipped with a limit switch, a 3-way solenoid pilot and check valves.
For large valves, an accelerator quickens valve response.
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