2-Port Motorised Valve 22mm For Radiators, Central Heating, Underfloor Heating 22mm compression connection. 5-wire installation. The motorised zone valve has been designed to control the flow of water in iron and copper pipe systems. ---Power Supply : 230 Volts AC 50Hz ---Switch Rating : 2.2A ---Cable Length: 1m 5 to 88°C ---Flow Temperature Spring-Return Action 5-Wire Installation ---1 Year Guarantee ---Ambient Temperature : 50℃ max ---Flow Temperature : 5℃ to 88℃ max ---Static Pressure : 8.6 bar max.