The John Guest push‑fit polypropylene Speedfit‑to‑Speedfit shut‑off valve is designed to isolate the supply to a fixture or appliance. Engineered for quick, tool‑free installation, John Guest valves provide an instant, reliable push‑fit seal without the need for heat, sealants, or specialist equipment.

Its precision collet locking mechanism grips the pipe securely without deforming it or restricting flow. The valves are corrosion resistant and fully demountable, helping to enhance system performance and reduce downtime during maintenance.

Manufactured from polypropylene and fitted with an EPDM O‑ring, the valve offers greater chemical resistance than acetal push‑fit versions. It is suitable for potable water systems (10 bar at 20°C), intermittent hot water applications (4 bar at 60°C), and water treatment or purification setups. All John Guest fittings are manufactured and assembled in the UK.