Description
The Johnson Controls VA7830-HGA-2 Electric Valve Actuator is a reliable and convenient product which, in addition, has fail-safe close position, This item is sturdy and may be mounted directly on to rotary globe valves. It can be controlled by a range of signals other than the basic on/off signals; floating voltage, proportional 0-10VDC, or proportional 4-20mA. One of the most Essential design elements is the integration of the spring-return mechanism which causes the valve stem to retract (fail-safe) if power is removed. This makes sure that water is shut off in case of an emergency to avoid the flood washing away the system.
