Use RS PRO check valves as a preventative measure to protect water supplies from contamination. Once installed check valve prevents backflow and back-siphonage contamination thanks to the double valve design that offers a failsafe backup should one of the valves fail.

Our double check valves are made from a copper alloy and available in various thread sizes. The smaller-sized check valves are commonly used with domestic applications and installed close to water outlets such as taps, basin taps, showers, and toilets. In contrast, the largest operating in the main cold-water supply in commercial applications.

RS PRO checks valves are very simple to install via two joints. The flow through the valves must follow the direction arrow on the valve body.

Q: Should check valves be vertical or horizontal?
A: A horizontal installation should always be the preferred choice

Q: Can you put two check valves together?
A: By design, double check valves are technically two single check valves combined. It provides a backup should one of the valves malfunction.