Hep2O is packed with unique features that make fitting easier, quicker, and more secure for installers. It is the only system with joint recognition and secure demounting, and it comes with a 50-year guarantee. Push-fit Hep2O includes unique features that enable quick and easy installation with a secure fitting. It is the only push-fit plumbing system with joint recognition, secure demounting, and a 50-year guarantee. The system is compatible with both plastic and copper, making it ideal for new build and refurbishment projects. Hepkey Release Tool set available (code 20940). Hot and cold flexible push-fit plumbing system. Feel the rumble, leak-free connection guaranteed. BS EN 7291 parts 1 and 2, WRAS approved. KIWA certified. Secure and easy demounting with HepKey system. 50-year industry-leading guarantee. Minimum operating temperature: -5 degC. Maximum operating temperature: 114 degC. Maximum operating pressure at minimum temperature: 12 BAR. Maximum operating pressure at maximum temperature: 3 BAR. Hep2O Socket / Socket Reducer 15 x 10mm in White Plastic.