The Honeywell V4043B Motorised Valve is designed to control the flow of water in domestic central heating systems where both radiator and hot water cylinder circuits are pumped. It provides reliable control for fully pumped heating installations. This valve features a motor-open, spring-return mechanism and includes a potential-free end switch for electrical control of a pump and/or boiler. Unlike normally closed models with standard end switches, the V4043B is particularly suitable for solid fuel heating systems, as it is designed to continue operating in the event of a power failure, helping maintain system safety. The valve also includes a replaceable powerhead, allowing maintenance without draining the heating system, making servicing faster and more convenient.

Key Features :

• 22mm 2-Port Motorised Valve

• Motor-open operation with spring return

• Suitable for domestic fully pumped central heating systems

• Ideal for solid fuel systems

• Manual lever for system filling and draining

• Replaceable powerhead – no system drain-down required

• Potential-free end switch for pump and/or boiler control

• Quiet operation with low power consumption

• Manufacturer warranty: 1 year