* Motor open * Spring return action * Manual lever for filling and draining the system * Powerhead replaceable without draining down * Potential free end switch for electrical control of pump and/or boiler * Quiet operation, minimal power consumption. Compatible with V4043H, V4044C and V4073A valves, this Honeywell replacement synchronous motor with 240VAC supply voltage is required for all modern two or three port motorised valves in any body size and pipe connection type. Replacement motor for V4043, V4044, V4073 240V 50Hz zone valves. Genuine Part, Manufacturer: Honeywell