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. BSPP thread with a flat washer to create a leak free seal. 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. Brass construction. Inner metric thread. IMPORTANT SIZING NOTE - Most plumbing products are measured using BSP thread dimensions which measure 1/4 inch larger than that stated, therefore this 3/4 Inch BSP thread actually measures 1 Inch in diameter. If your thread measures 3/4 Inch in diameter then you require the 1/2 Inch version of this product. This listing is for a Pack of 1 hep20 manifold hep2o underfloor heating manifold kits hep manifold.