If you are willing to wholesale non-spring return actuators from one of the famous non-spring return actuators suppliers in China,Website:http://www.chinaactuators.com, or you are going to check electric damper actuators, vav damper actuators, direct coupled actuator, damper drives, hvac actuators price with a such factory, Star Win Actuators Manufacture Co.,Ltd is always at your service.ActuatorsStar Win s actuator is a type of motor that is responsible for moving or controlling a mechanism or system.It is operated by typically electric current, An actuator is the mechanism by which a control system acts upon an environment. The control system can be simple (a fixed mechanical or electronic system), software-based (e.g. a printer driver, robot control system), a human, or any other input.Non-Spring Return ActuatorsThe HVAC Actuators are usually done the opening or closing of control valves automatically by electrical. The control signals traditionally base on 0-10V for HVAC system,more common now are 4-20mA signals for industry.Datasheet: download(leave mail, company name)Type selectionThe marked in colors items,same color must choose one item for a product;Non- marked items choose as your requirement, showed No means without the function.