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

The new UPS3 is a compact, high efficiency replacement for Grundfos UPS and UPS2 15-50/60 circulator pumps and many internal boiler pumps. Suitable for domestic heating systems with boilers up to 30kW, just one model of UPS3 can be used to replace all previous 4m, 5m and 6m head versions of UPS and UPS2 pumps. Using the GO Replace app, suitability for replacing a wide range of internal boiler pumps can also be confirmed.

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 Drayton RT414 TRV provides control of individual room temperature. With integral thermostatic sensing head and reverse flow capability. The 15mm angle valve can flow or return mounted both vertically or horizontally.

Britain's best-selling range of thermostatic radiator valves sets the standards for design, performance and quality, including TRV4 lockshield and pushfit packs to suit most domestic and commercial heating systems.