TRA2100 series actuator

TRA2100 series actuator is matched with TRV2010 series valve body. Zone valve is used to control the flow rate in HVAC system so as to control the room temperature.
The actuator is driven by hysteresis synchronous motor, and returned by spring. Valve is normally close. When the thermostat is asked to work, it sends a signal to the actuator to the valve. After the valve is opened, the chilled/hot water enters the coil, and cold/warm air is supplied to the room. When the room temperature rises to the set point, the thermostat sends a signal to the actuator to cut off the power, and the spring shuts down the valve, so the water to the coil is shut off. The room temperature is kept in the setting range all the time through opening or closing the valve.