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Purpose built valves for the prevention of an unintentional flow of water or other fluid from a potentially polluted or hazardous source into a potable water supply. Keystone can offer you a practical and affordable solution to all of these situations. We have developed a range of purpose built Reduced Pressure Zone devices, Double Check Valves and Vacuum Breakers you can rely on.
Reduced Pressure Zone Devices
For high and medium hazard rated applications.
- Pressure : up to 1600kPa
- Temperature : up to 90°C
- 15-50mm BSP screwed connections
- 65-300mm Flanged end connections
- Suitable for hot or cold service
Double Check Devices
For medium hazard rated applications.
- Pressure : up to 1600kPa
- Temperature : up to 90°C
- 15-50mm BSP screwed connections
- 65-300mm Flanged end connections
- Suitable for hot or cold service
Double & Single Check Detector Assembly with Bypass
For medium and low hazard rated applications.
- Testable Devices
- Pressure : up to 1600kPa
- Temperature : up to 90°C
- 15-50mm BSP screwed connections
- 65-300mm Flanged end connections
- Choice of single or double bypass in 65 - 300mm sizes
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