Push-fit system, no tools required. In4Sure joint recognition indicates when the pipe is connected. Secure demounting with the HepKey system. approved safe for drinking water. Demountable & Reusable Suitable for Drinking Water Suitable for Water Systems Suitable for Hard & Soft Water Areas 50 Year Manufacturer's Guarantee (T&Cs Apply) Demountable & Reusable Suitable for Drinking Water Suitable for Water Systems Suitable for Hard & Soft Water Areas 50 Year Manufacturer's Guarantee (T&Cs Apply)