Piston stroke length, suitable for applications requiring a greater thrust of the occasion; and films stroke is small, only direct drive stem. Because rack and pinion pneumatic actuator has a simple structure, the output thrust, smooth and reliable operation, and safety-proof, etc. Weifang valve, widely used in higher security requirements of the production process in power plants, chemical, oil refining and the like. Shandong Everbright Valve Co., Ltd. wide production of this type of valve application, reliable quality DJ41Y low temperature cut-off valve price, no internal leakage, leakage phenomenon, frequent switching is not stuck, rust, the majority of chemical plants, thermal power plants, steel plants, printing and dyeing, food plants the best choice. When the compressed air from the A nozzle into the pneumatic actuators, gas push linear motion dual piston to the ends (head end) Shandong valve, rack piston driven rotating shaft gear rotates counterclockwise 90C, valve Jibei turn on. Run the ends of the valve of the gas pneumatic with B officer Tsui discharge. Conversely, when the compressed air from the nozzle into the two ends B official pneumatic actuator, the air mover double plug intermediate linear motion to the rack on the piston shaft of the gear is rotated in the clockwise direction 90C, i.e. the valve closed. At this point in the middle of a pneumatic actuator with A gas discharge nozzle. The above is a standard type of transmission principle. According to user needs, pneumatic actuator can be installed into a standard type opposite drive principle that selecting the right shaft clockwise to open the valve counter-clockwise to close the valve. Single acting (spring return) pneumatic actuator A nozzle for air intake, B nozzle for vent (B nozzle should be installed muffler). A nozzle inlet valve is open when the valve is closed by spring force breathe. Low temperature cut-off valve _ shutoff valve _ Everbright valve shut-off valves, Ltd. provided by Shandong Everbright valve. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) strong, credible, Shandong Weifang ball industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Everbright valve and you hand in hand into the brilliant, for a better future!