Thermostatic valve is a new-type valve of controlling fluid temperature, which controls opening/closing or the size of opening of valve by temperature-sensing medium's expansive strength with temperature varying and regulates the flux of cool and hot fluid entering the valve to control exporting temperature of fluid. Thermostatic valve, with simple structure , low price , reliable operation , unwanted dynamic force and high automatization, is widely applied in temperature controlling of various kinds of hea...