Model 843
The Model 843 High Pressure, Booster Pump Control & Pressure Sustaining Valve is a hydraulically operated, piston 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 or pump differential 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
- Replaces line sized check valve
- Fail-safe mechanical closure
- In-line serviceable – Easy maintenance
- Flexible design – Easy addition of hydraulic features
Typical Product Applications
Network Over Demand
Network demand is greater than pump design
specifications:
- During empty pipeline filling
- During over demand by consumers
- When the pump pressure specification is much higher
than system resistance
Any of these factors might cause pump overload and
cavitation damage.
The Model 843, by adding a pressure sustaining feature to
the Booster Pump Control Valve, ensures that the pump
operates within design specifications protecting both the
pump and the system.
When pump upstream pressure varies use the model
WW-843-06 with differential pressure sensing
Downloads
WW 843 Product Page
WW 800 Series Engineering
WW Ordering Guide 800 Series
Spare Parts – Waterworks
