The Johnson Controls VA-7150-1001 Electric Valve Actuator is a Universal actuator used specifically on valves for heating ventilation and air conditioning. Unlike basic switch systems that use toggling for ‘on’ and ‘off’, it uses pulse signals to state how far and in what direction a connected valve should rotate. #JohnsonControls #VA-7150-1001 #ElectricValveActuator #JohnsonContro... https://www.partshnc.com/24v-3wire-incremental-elec-act