... ball valve&Motorized valve&fan coil thermostat valve Size: DN15, DN20, DN25, DN32Features: 1) Smooth flow and no block up 2) High flow capability, 3 ... flow rate more than traditional zone valves3) KVS=21m3/h (3/4"), suitable for any specifications of fan coil unit4) Tight ... convenient operation 6) The power is cut off when the valve reaches the on/off position, which ensures long life service ...