The John Guest push-fit acetal service valve (metric) is designed to temporarily isolate hot or cold water supply to a drinks dispense fixture or fitting. The ball valve is operated easily with a quarter-turn screwdriver slot and is suitable for both hot and cold water applications.

Installation is quick and straightforward, with push-fit technology providing a secure connection and a leak-tight seal—no tools, heat, or sealing agents required. Its precision collet locking system holds the pipe firmly without distortion or restricting flow. John Guest push-fit valves are corrosion-resistant and fully demountable, helping to maintain system performance and minimise downtime during servicing. All John Guest fittings are manufactured and assembled in the UK.