PolyPlumb is a traditional push-fit plumbing system. It is robust and reliable, and has stood the test of time. PolyPlumb fittings feature a one-step jointing process and a high-performance stainless steel grab ring, ensuring superb joint integrity. Use PolyPlumb with Polypipe grey polybutylene flexible pipe, or combine PolyPlumb fittings and copper pipe. Polypipe recommends the use of a Polypipe metal or plastic pipe stiffener when used with plastic pipe. PolyPlumb is suitable for use in most plumbing and heating installations, including hot and cold water and underfloor heating applications. The system offers a high degree of reliability, achieved through a product design that has been tried and tested over the past 30 years. The Polyplumb system is not suitable for the transportation of gases.