Optimum 22mm Zone Valve 2 Port Motorised 5 Wire Central Heating / Boiler System Control Brand_Earlex SMI85M04DE/01

SMI85M04DE/01

SMI50C05GB/03

1 x Extra long water fill hose (5 metres)

Tooth Pitch: 8mm

Optimum 22mm Zone Valve 2 Port Motorised 5 Wire Central Heating / Boiler System Control Brand_Earlex SMI85M04DE/01Optimum 22mm 2 Port Motorised Zone Valve Brand new, genuine original Optimum 2 port spring return zone valve with 22mm compression fittings and an auxiliary switch. This is for general purpose flow control applications or central heating systems. When correctly wired with an appropriate room thermostat, cylinder thermostat and programmer the valve will control the water flow from the boiler to hot water and from boiler to central heating.