Installed at the hot water outlet of unvented water heaters, the thermostatic mixing valve allows mixing with cold water from the supply network. The resulting mixed water is transported at a lower temperature, saving energy by minimising heat loss through the pipework. It increases the available hot water compared to the tank capacity and lowers the risk of scalding. Available in 1/2″ and 3/4″.
NHS Estate’s current guidelines recommend a maximum distance of 2 m from the outlet of the mixing valve to the terminal fitting, which it is to serve.