First, we should know the definition of the thermostatic mixing valve (TMV): A thermostatic mixing valve is a kind of valve that provides continuous, constant temperature mixing water by automatically controlling the ratio of the hot and cold water inlet.

Second, the thermostatic mixing valve is an important part of the water heater. The product is widely used in electric water heater mixing valve, solar water heater and geothermal heating water system. Users can adjust the mixing temperature of hot and cold water according to their needs, the required temperature can be quickly reached and stabilized, to ensure that the water temperature is constant, and is not affected by changes in water temperature, flow, water pressure, to solve the problem of hot and cold water temperature in the bathing centre, when the cold water is interrupted, the mixing valve can automatically turn off the hot water within a few seconds, playing a safety protection role.

Finally, when the cold water supply is suddenly interrupted and the hot water temperature is higher than the set temperature, the SMLG mixing valve can quickly shut off the hot water supply, thus avoiding hot water scalding and the response time is much higher than similar products (foreign mixing valves and imitation products take a few seconds for the hot water to stop), making it truly foolproof and safe.

The above briefly explains the need of thermostatic mixing valve, not only in the use of resource-saving aspects, but also to be able to put forward some requirements on safety issues.