... damper, and zone valve (2/3-way valve)The hysteresis synchronous motors have such characteristics as the motors with magnetism operate ... Gear or Shaft out type ,Use to HAVC system,AC Hysteresis Synchronous Motor1, AC Hysteresis Synchronous Motor is used to HAVC system, Electric Valve ... 5/6r/min 7)Outout type: Gear/Shaft 3, Hysteresis Synchronous Motor is used to HAVC system, Electric Valve, timing Set ...