260166-002 - 4-Wire Manifold Valve ActuatorRehau 260166 002 4 Wire Manifold Valve Actuator The 4 wire manifold valve actuator is used to open and close circuit valves on the 1 and 1 1 4 in. PRO BALANCE manifolds. Actuator has integrated end switch to coordinate on off control of pumps. Use REHAU thermostats to control actuators directly, or connect through REHAU electronic controls. Actuators require a 24 VAC power supply to operate. PREH123330