This thermostatic mixing valve functions to adjust the flow ratio between incoming hot and cold water, maintaining a consistent, comfortable water temperature for regular daily household use. It is fitted with US standard 1/2 in. NPT thread that fits most common residential plumbing connections directly, no extra adapter is required to finish the installation process. The entire valve body is made of solid brass, which effectively resists water corrosion and withstands long term exposure to normal household water pressure. All temperature markings on the valve surface are printed in Fahrenheit for easy, intuitive reading, with the applicable cold inlet water temperature ranging from 39°F to 84°F, hot inlet water temperature ranging from 122°F to 203°F, and the stable outlet water temperature covering 68°F to 122°F. Users can turn the valve knob directly to adjust water temperature, and press the built-in red safety button while rotating if they need to set a temperature above 100°F, effectively preventing unexpected scalding or sudden cold water shocks during daily use.