PolyPlumb is a traditional push-fit plumbing system that is robust and reliable. It features a one-step jointing process with a high-performance stainless steel grab ring for superb joint integrity. PolyPlumb can be used with Polypipe grey polybutylene flexible pipe or copper pipe. Pipe stiffeners are recommended when used with plastic pipe. This system is suitable for most plumbing and heating installations, including hot and cold water and underfloor heating applications. It is not suitable for the transportation of gases.