A pair of isolation valves are used to connect an underfloor heating manifold to the UFH control pump pack. This regulates the flow of water from the mains to a water service pipe. UFH164 Will connect direclty to the Polypipe underfloor heating control pump pack (UFHSPP1). Key Features 1 inch isolation valves Made of stainless steel Supplied as a pair 1x red 1x blue Gauges