Temperature on the function and working principle of pneumatic control valve

Self-reliance type temperature pneumatic - valve by using the principle of liquid heat expansion and incompressible realize automatic adjustment. Fluid expansion is uniform in the temperature sensor, the control effect of proportional control. Accused of medium temperature changes, the volume of thermal fluid inside the sensor as the expansion and contraction. Accused of medium temperature is higher than the set value, the thermal fluid expansion, push down close the valve, valve core to reduce the flow of heat medium; Accused of medium temperature is lower than the set value, the thermal liquid contraction, reset spring push the valve core to open, to increase the flow of heating medium. Self-reliance type pneumatic control valve is a kind of temperature does not need external energy, and to automatically adjust the temperature of the valve. It is suitable for steam, hot water, hot oil as medium of various heat transfer conditions. Temperature self-reliance type pneumatic - valve widely used in heating, air conditioning, hot water temperature automatic adjustment, as well as the special working condition of automatic temperature adjustment, such as chemical industry, textile, pharmaceutical and other production engineering. Temperature self-reliance type pneumatic control valve using features: 1. Simple installation. 2. Without the power source. 3. Set a simple and easy adjustment. 4. Balancing valve core design. Three, model number: 4, the main technical performance index of note: KVS said is medium for water; When the temperature is 20 ℃, 1 bar pressure difference of the maximum flow of the valve ( m3 / h) Five, six technical parameters, the order notes 1, when you place an order, please provide in detail the operating conditions, nominal pressure, nominal diameter, working pressure, thermal mass medium pressure and temperature, was charged with medium and temperature requirements. 2, general tube length is 3. 5 - 4. 5 m, if you have special request, please specify. 3, if need other special-purpose temperature pneumatic control valve, please contact the company directly. Seven, installation guide