The John Guest push-fit acetal double check valve provides reliable protection against backflow and back siphonage, helping to safeguard against Fluid Category 3 risks. Its low headloss design makes it suitable for potable liquids, foodstuffs, intermittent hot water (up to 50 °C, in accordance with the British Beer and Pub Association Code of Practice), as well as water treatment and purification applications.

Quick and easy to install, the valve forms a secure push-fit connection with a leak-tight seal—no need for tools, hot works, or sealing compounds. The unique collet locking mechanism ensures the pipe is held firmly in place without deformation or restriction to flow.

Corrosion-resistant and fully demountable, John Guest push-fit valves enhance system performance and help reduce downtime during maintenance. All John Guest fittings are proudly manufactured and assembled in the United Kingdom.