Balanced motorized 2-port or 3-port hydronic valves Suitable valve bodies are listed in product group 'VC Series Motorized Zone Valves - Valve Bodies' Honeywell VC Series balanced 2-position hydronic valves are used in domestic and small commercial heating and cooling applications to control the flow of hot and/or cold water. They consist of an actuator, valve and a cartridge assembly Ambient temperature: ... 65 oC Materials: Actuator cover and base made of plastic Power supply: 24V, 50-60Hz Input signal: SPDT Type of terminals: Molex(TM) socket