How often should a thermostatic mixing valve be serviced?
A – The amount of time between servicing will vary dramatically depending on site and water quality conditions. To conform with the DO8 specification the valves should be checked against the original performance at 6 weeks, 12 weeks and 6 months, if the performance has not significantly altered at this time then a bi-annual testing regime can be started. The valves only need to be stripped down and serviced if the tests show a deterioration in the performance of the valve.
