920GS-01
Stainless Steel Pressure Sustaining or Backpressure Control Valve with Hydraulic Check Feature
920GS-01 (Globe) and 920AS-01 (Angle) Series is designed to permit flow when upstream pressure is above the adjustable setpoint of the control pilot, and throttle when upstream pressure falls below the adjustable setpoint. The valve closes drip-tight when downstream pressure becomes greater than upstream pressure. When installed in line on the discharge of a pump, the valve acts as Backpressure Control and Check Valve. When pump discharge pressure falls below the pilot setting the valve throttles to increase backpressure against the pump. When the pump is turned off, the valve acts as a Hydraulic Check Valve, preventing reverse flow. When installed in line connecting two distribution zones, the valve acts as a Pressure Sustaining Control Valve. When upstream pressure falls below the pilot setting the valve throttles to sustain pressure in the upstream zone, and closes drip-tight when downstream pressure becomes greater than upstream pressure.
Features
- Permits flow when upstream pressure is above the adjustable setpoint of the control pilot, and throttle when upstream pressure falls below the adjustable setpoint
- Depending on installation location, the valve serves as a Pressure Relief Control Valve, Pressure Sustaining Control Valve, or Backpressure Control Valve
- Closing speed and pressure setpoints are adjustable
- Lightweight Stainless Steel construction reduces corrosion, diaphragm wear, and labor frequency and costs
Approval/Certification Information
For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:
| ASSE | CSA | FM Approvals | NSF |
| UL | ULC | USC | WQA |