Increasing hot water temperatures at outlets to over 50 degrees centigrade is necessary to control legionella bacteria, yet this can increase the risk of scalding.
TMVs are a device which will effectively avoid scalding to ensure that the water temperature is safe and comfortable. Hot and cold water is blended as it passes through a valve on its way to the tap, ensuring it’s at the optimum safe temperature when it reaches the water outlet.
Where a risk assessment recommends the fitting of TMVs, the strainers or filters should be inspected, cleaned, descaled and disinfected taking into account the manufacturers. TMV failsafe mechanisms are also carried out six-monthly to ensure they are working correctly in the event of a water supply failure, where they may automatically shut off.
TMV servicing is of paramount importance particularly in schools and care homes and hospitals where the vulnerable and elderly are susceptible to scalding.