PolyPlumb is a traditional push-fit plumbing, tried and tested, grey plumbing system. Robust and reliable, PolyPlumb has stood the test of time. PolyPlumb fittings feature a one step jointing process and a high performance stainless steel grab ring within the fitting, ensuring superb joint integrity. Use PolyPlumb with Polypipe grey polybutylene flexible pipe, or you can combine PolyPlumb fittings and copper pipe. We recommend 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. Polyplumb Range Benefits Original grey plumbing system, using tried and tested technology for many years PolyPlumb provides a superb combination of fast fitting with a permanent, reliable fix PolyPlumb offers a one-step jointing process, with joint integrity assured by a high performance stainless steel grab ring Demountable by dis-assembly only Use for all hot and cold water supply or heating applications, including under floor heating Use with Polypipe grey polybutylene pipe systems or copper pipe Use Polypipe metal or plastic pipe stiffeners Pipe stiffeners / pipe support sleeves are an integral part of the joint when using polybutylene pipe with either PolyFit PolyPlumb PolyMax fittings or compression fittings, and need to be fully inserted in to the pipe end. Pack Size: Singles Polyplumb Pipe Stiffener Size: 22mm Material: Plastic They are not required when using copper pipe.