The classification of the pneumatic valve gas

the fuel gas pneumatic valve widely used, a wide range of classification method is more also. In general can be divided into two categories:
the first automatic pneumatic valves: rely on the ability of the gas itself by action of pneumatic valve. Such as check pneumatic valve, pneumatic valve, relief valve adjustment.
: the second drive pneumatic valve by manual, electric, pneumatic control action of pneumatic valve. Pneumatic valves such as gate, globe pneumatic valve, pneumatic valve, throttle control pneumatic valve, pneumatic ball valve, plug valve, etc.
in addition, the classification of the pneumatic valve has the following several ways:
one, according to the structure characteristics, according to close a pneumatic seat relative to the moving direction can be divided into:
. Door form: shut down along the mobile pneumatic seat center.
. Gate type: closed parts along the vertical pneumatic seat center move.
. Cock and ball: closing is a plunger or a ball, the center line of rotation around itself.
. Swing type: closed parts around the pneumatic seat outside the axis of rotation.
. Disc: close a disc, revolve around pneumatic shaft inside the seat.
. Slide type pneumatic valve: shut down a slide in the perpendicular to the direction of the channel.
2, according to the structure types are:
cock pneumatic pneumatic valve, gate valve, globe pneumatic valve, pneumatic ball valve - Used for open or closed pipeline gas flow. Check the pneumatic valve ( Including hand moving valve - Used to prevent reversal of gas in the pipe automatically.
throttling pneumatic valve - Used for regulating the flow of gas pipeline.
the reduced pressure pneumatic valve - Used to automatically reduce gas pressure in the pipeline and equipment. System make the gas passes through the pneumatic valve clearance, produce resistance pressure loss, achieve the relief.
3, according to the purpose, according to the different USES of pneumatic valve can be divided into:
. Open circuit using: used to connect or cut off the gas pipeline, such as by pneumatic pneumatic valve, ball valve, gate valve, pneumatic butterfly valve, etc.
. Stop recycling: to prevent gas flow back, such as check pneumatic valve.
. Regulate use: used to adjust the pressure and flow rate of gas, such as adjusting the pneumatic valve, pneumatic valve to relieve stress.
. Distribution using: used to change the gas flow and distribution, such as three-way cock, distribution, pneumatic valve, pneumatic valve, etc.
4, according to the drive way, according to different driving mode can be divided into:
. Manual: the hand wheel, handle, lever or sprocket, human power, large transmission torque, with a worm gear, gear speed reducer, etc.
. Electric: with the help of a motor or other electric device to drive.
. Pneumatic; Use compressed air to drive.