Check the classification of the pneumatic valve (4)

in the first place, swing check pneumatic valve, pneumatic valve on the cylindrical coil pneumatic valve, swing check around the axis of rotation channel seat, because to a streamlined, pneumatic valve, flow resistance channel than the low flow and the big runoff changes smaller pneumatic valve lift check rare occasions, but not for the pulsating flow, the sealing performance is better than that of the elevator. Checkpoint unicuspid oscillating, double disc type and type, by the pneumatic valve diameter, form a key, the purpose is to prevent the backflow medium flow or stop, the influence of the three most less water. Second, aerodynamic lift check valve, pneumatic valve, pneumatic valve along the vertical centerline sliding check pneumatic valve, pneumatic valve lift check can only be installed in horizontal pipe runs with the small pneumatic valve and high pressure pneumatic ball valve can be used. Lift check pneumatic valve body (same shape And by the pneumatic valve general) , so its flow resistance coefficient. A similar structure and by the pneumatic valve, pneumatic valve, pneumatic valve with the same deadline. Pneumatic valve pneumatic valve cover of upper and lower guide sleeve processing, Jane, Jane free lift reduce light of pneumatic valves, pneumatic disc medium thrust when the downstream media, when the media flow, to guide the pneumatic valve pneumatic valve open vertical landing flap by the seat of the self, in order to prevent the effect of the medium upstream. Elevator media channels through pneumatic valve inlet and outlet channel direction and perpendicular to the pneumatic valve seat, vertical lift check pneumatic valve, its import and export channels in the same direction with the pneumatic valve seat in the direction of media channels, the flow resistance is less than the pass-through. Three, pneumatic valve disc: pneumatic pneumatic valve seat around the rotation of the needle. Disc check pneumatic valve has simple structure and can only be installed in a horizontal pipe, poor sealing. Four, pipeline check pneumatic valve, pneumatic valve slide along the center line of the pneumatic valve body. Pipeline pneumatic valve is one of the emerging pneumatic valve, its small size, light weight, good development process is a pneumatic valve. But the fluid resistance coefficient is larger than swing check pneumatic valve. Fifth, compression check pneumatic valve: this kind of pneumatic valve is used as boiler feed water and steam pneumatic valve closing, it has a lift check pneumatic valve and globe valve or pneumatic valve Angle comprehensive function. In addition, there is - Some does not apply to the pump discharge check the installation of the pneumatic valve, such as hand valve, spring, Y type check pneumatic valve, etc.
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