Supplied complete to connect to the cold water tap with on/off valve, inlet hose connector (1/2″, 12 x 7mm) and outlet spout/tube. There are now two versions, single and double capacity. It will operate from any water supply giving between 5-75lb per inch squared. Maximum temperature 40 degrees Celsius. The outlet has a built-in 50 micron filter and can provide up to 30/60 litres per hour, dependent on model purchased.