the structure of the gas control valves

Department of the gas valve through the gap, resulting in the loss of resistance to pressure to achieve Gas Control Valve the purpose of decompression. By end-use, the valve can be divided according to the different uses: 1 breaking with: to connect or disconnect the gas pipeline, such as the Gas Control Valves, gate valve, ball valve, butterfly valve. 2 ended reuse: to prevent the backflow of gases, such as check valves. 3 adjustment: adjust the gas pressure and flow, such as valves, valve. 4 assignment: to change the flow of the gas, gas distribution, such as the three-way cock, dispensing valve, spool valve. Press the drive mode, depending on the driving mode can be divided into: 1 Manual: With hand wheels, handles, levers or sprockets, etc., there are human-driven, large transmission torque when fitted with reduction gear worm gear. 2 Electric: With motor or other electrical device driver. 3 air; driven by compressed air.