... flow, no flog 2.three times flow rate 3.No leakage Product Description: 3/4''' Auto Three Way Valves---Radiant Floor Heating ... AC220V or AC110V Specifications 1. Size: DN15 (1/2"), DN20(3/4"), DN25 (1") 2. Power supply: AC220V/110V, 50/60Hz ... 18months Guarantee, ISO9001, FCCCommodity KLV motorized valvesizeDN15(1/2" ); DN20 (3/4" ), DN25(1" )power supplyAC220V/110V, 50/60HZpressure1.6Mpatemp. range2-95 ...