The VA-720x Series synchronous motor-driven actuator provides incremental (three wire), incremental with feedback or proportional control of valves with up to 3/4 in. stroke in heating, ventilating, and air conditioning applications.
This compact, non-spring return actuator has a 180 lb force minimum and responds to a variety of input signals
The VA-720x Series actuators use a reversible synchronous motor and a magnetic clutch to accurately position the valve. This combination can reliably generate 180 lb of force in either direction.
The actuator maintains the shutoff force even if power to the actuator is removed. When the controller provides a signal for the actuator to move in the opposite direction, the shutoff force is reduced and the valve modulates.
The magnetic clutch maintains a constant load at the end of travel, which ensures tight valve shutoff and compensates for seat wear.
Reviews
There are no reviews yet.