Three-way thermostatic valve without external energy and automatically adjust the temperature. Three-way thermostatic valve for steam, hot water, hot oil for a variety of conditions medium heat. Widely used in heating, air conditioning, domestic hot water temperature is automatically adjusted, as well as the special conditions of the thermostat, such as chemical, textile, pharmaceutical and other production projects. A three-way thermostatic valve works: the use of liquid-way thermostatic valve thermal expansion and the principle of incompressible liquid automatic adjustment. Expansion of the liquid within the temperature sensor is uniform, and its role is to control the ratio adjustment. When accused of medium temperature changes, temperature sensors inside the liquid volume with the expansion or contraction. When accused of medium temperature higher than the set value, the temperature of liquid expands, pushing down the spool valve is closed, reducing the flow of heat medium; accused of medium temperature is below the set value, the temperature of liquid contraction, return spring push Open the valve body to increase the flow of the heat medium. Second, the use of three-way thermostatic valve Features: 1 easy to install. 2 without power gas source. 3 Easy to adjust settings. 4 balanced spool design. Source: http://www.dxlyzk.com/YZZWFF-SonList-957849/ tee thermostatic valve