The ESi Controls 3 Port Motorised Mid-Position Valve is easy-fit, with a simple clip on/off detachable actuator head and plug cable.
The actuator has been designed to fit directly onto the valve body used by the market leader, and similar type bodies, with the two supplied screws & making it a quick-fit direct replacement for most households.

The spring return valves have been designed to be used in commercial, industrial and domestic central heating systems which, when correctly wired with an appropriate room thermostat, cylinder thermostat and programmer, will control the water flow from the boiler to hot water, and from the boiler to central heating.