The animation above illustrates how a thermostatic mixing valve works. Further explanation is given in the document here.
Thermostatic mixing valves (TMVs) mix the hot and cold water supplies to produce a temperature-controlled flow. The hot water supply is typically around 60°C, and is maintained at this temperature to prevent the growth of harmful organisms, such as Legionella bacteria. A supply of higher temperature water is also required for cleaning and washing purposes in the kitchen and laundry while also increasing the overall capacity of warm water (mixed with cold) to the building. Water at 60°C, however, can scald and so it is mixed with cold water, at the point of discharge, to produce a flow at a safe and comfortable temperature of 41°C.
In the 1920s, we developed the first thermostatic mixing valves or TMVs (named blender at the time) to be manufactured and sold in the UK. Now we supply TMVs in a range of sizes for a variety of applications including healthcare, nursing and sheltered accommodation, education, sport and leisure, housing associations and secure hospitals and prisons.
Follow the relevant link below to see each range of TMVs (DN15-DN50).