This V4073 3 port mid position diverter valve has been designed to control the flow of water in small bore domestic central heating systems, where both radiator and hot water cylinder circuits are pumped.
It is typically suited for small to medium sized installations.
The Honeywell V4073A Mid-position Diverter Valve should be used in conjunction with a room thermostat and cylinder thermostat to provide full temperature control of a conventional, fully pumped central heating installation.