The V4043 series of two port motorised valves has a wide range of flow control applications in domestic and light commercial central heating systems. This 4043H version is normally closed, 22mm compression, SPDT end switch at 8.6 KV and 0.45 bar maximum differential pressure.
Spring return action
Manual lever for filling & draining the system
Powerhead is replaceable without draining down
Potential free end switch for electrical control of pump and/or boiler
Quiet operation, minimal power consumption - options of normally open & normally closed versions available