This John Guest push-fit polypropylene Speedfit to Speedfit shut off valve is designed to isolate the supply to a fixture or appliance. It offers a fast and simple installation process, creating an instant push-fit connection and a leak-tight seal without the need for tools, hot works, or sealing agents. The valve features a unique collet locking design that securely holds the pipe in place without deforming it or restricting flow. Manufactured from durable polypropylene with an EPDM O-ring, it provides high chemical resistance and is suitable for potable water (10 bar at 20°C) and intermittent hot water (4 bar at 60°C), as well as water treatment and purification applications. The valve is corrosion-resistant, fully demountable, and offers superior flow characteristics. It is compatible with LLDPE or soft metal pipe/tubing. Note: Not suitable for compressed air, vacuum, explosive gases, petroleum spirit, or other fuel or heating systems.