Hysteresis Motor,synchronous motor,used in motorised valve for HVAC system, ... company to make of hysteresis motors that are used for fan coil, damper, and zone valve (2/3 ... AC Hysteresis Synchronous Motor1, AC Hysteresis Synchronous Motor is used to HAVC system, Electric Valve, Riming Set etc ... type: Gear/Shaft 3, Hysteresis Synchronous Motor is used to HAVC system, Electric Valve, timing Set etc. ...