Honeywell 2 Port Motorised Zone Plumbing Heating Valve 22mm V4043H1056/U

The V4073A Valve has been designed to control the flow of water in domestic central heating systems, where both radiator and hot water cylinder circuits are pumped. It is typically suited for small to medium sized installations

Automatic Bypass Valve suitable for all heating systems up to 10 bar static pressure where a boiler bypass is required or radiator thermostats are fitted. It provides a simple method of ensuring adequate flow through boilers which require a bypass as well as reducing system noise. In systems fitted with radiator thermostats, the valve opens automatically as the TRVs or zone valves close down and the resistance of the system starts to exceed the preset pressure limit.

The latest addition to the Lifestyle programmer range offers complete versatility with universal programming options. The preferred programme can be selected to suit the lifestyle of the homeowner. This ensures ultimate flexibility, comfort and energy saving. As with all other Lifestyle Programmers LP822 features the handy boost and advance functions.

An electro-mechanical 24 hour timer offering a selection of constantly on, constantly off or timed operation, with switching possible at 15 minute intervals using tappets set around an analogue clock for simplicity.