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. Wavin 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 comes with a 50 year guarantee. Ideal for installation in confined spaces. In4Sure joint recognition for secure joints. Feel the rumble, leak free connection guaranteed. Secure demounting with HepKey system. 50 year industry leading guarantee. Colour-coded packaging for easy identification - green 10mm, blue 15mm, purple 22mm and orange 28mm. BS EN 7291 parts 1 and 2, WRAS approved. New SmartSleeve for easy pipe insertion. Colour-coded packaging for easy identification - green 10mm, blue 15mm, purple 22mm and orange 28mmm.