Every Grundfos household pressure pump should be fitted with an isolating ball valve, flexible pressure hose and high quality discharge fittings to allow for easy stress free connection between the pump and the fixed pipework. This kit has 1m of 1" or 25mm flexible pressure hose. Every item in our discharge hose kit is the very highest quality that we can find, we source them from Germany, New Zealand, the USA and Australia so you can trust the quality, we do. We guarantee this hose kit for 25-years. All of our discharge hose kits are supplied fully assembled and tested ready for DIY installation.