DCVA-IAV: This is a compact version of DCVA. The full form of DCVA-IAV is Double Check Valve Assembly with Intermediate Atmospheric Vent. This backflow preventer is designed for limited space. It has ...

pressure vacuum breaker assembly, double-check valve assembly, and; registered Air Gaps. Examples of secondary types of devices are the hose connection vacuum breakers, atmospheric vacuum breakers and ...

“The water supply (water fittings) regulations which keep drinking water safe specify outside taps should always have a double check valve to prevent backflow. “Homes built since 1999 typically have ...

The kits are ready to connect to previously installed Watts or FEBCO pressure vacuum breakers and double check valve backflow preventers with existing temperature sensors, or any other backflow ...

Fit a compliant double-check valve to outside taps, such as one approved by BSI, KIWA, NSF or WRAS to prevent contaminated water flowing back into the drinking water supply.

DO fit a compliant double check valve to garden taps. The british standard (BS EN 806-5) states check valves should be replaced every ten years.