Butterfly pneumatic valve advantages and disadvantages, installation and maintenance

butterfly pneumatic valve can be divided into pneumatic butterfly pneumatic valves, electric butterfly valve, manual butterfly pneumatic valve, pneumatic valve adjustment is made open-close circular disc and with the pneumatic valve rod rotation to open and close and regulating fluid channel of a pneumatic valve. Butterfly butterfly plate installed on the diameter of the pipe of pneumatic valve. In cylindrical channels of pneumatic valve pneumatic butterfly valve body and disc disc around the axis of rotation, rotation Angle for ° ~ °, rotate to °, the pneumatic valve is fully open. Butterfly pneumatic valve, pneumatic valve also called flap is a simple structure of pneumatic valve regulation, at the same time can also be used for low pressure pipeline medium switch control. Butterfly pneumatic valve ( English: butterflyvalve) Refers to the closed ( Pneumatic disc or disc) For disc, revolve around pneumatic valve shaft to a pneumatic valve open and close, mainly in the line cut off and throttling. Butterfly pneumatic valve opening and closing is a disc-shaped butterfly plate, the pneumatic valve body around its own axis of rotation, so as to achieve the aim of opening and closing or adjust. Butterfly pneumatic valve fully open to the barrier is usually less than °, pneumatic valve and butterfly butterfly pole itself has no self-locking ability, in order to butterfly plate positioning, in the pneumatic valve stem with worm gear reducer. The use of worm gear reducer, can not only make the butterfly plate with self-locking ability, make the butterfly plate to stop at any position, can also improve the aerodynamic performance of the valve. Industrial special high temperature the characteristics of the pneumatic valve adjustment ability, apply pressure range is higher also, large nominal diameter pneumatic valve, pneumatic valve body is made of carbon steel, pneumatic valve plate seal using metal ring instead of rubber ring. Large high temperature butterfly pneumatic valve USES the steel plate welding manufacturing, mainly used for the duct smoke and gas of high temperature medium.
butterfly pneumatic valve can be divided into the form of the structure offset plate, vertical plate, inclined plate and leveraged. Can be divided into the form of the sealed type seal and hard seal type two kinds. Soft seal type generally use rubber ring seal, metal hard seal type usually adopt ring seal. According to the connection type can be divided into flange and clamp connection; According to the methods can be divided into manual transmission, gear transmission, pneumatic, hydraulic and electric.

the advantages of a pneumatic valve, butterfly, easy opening and closing rapidly, energy saving, fluid resistance small, can often operate.
, simple structure, small volume, light weight.
, can transport the mud, and the apertures least accumulated liquid.
, low pressure, can achieve good sealing.
and good regulation performance.
2, adjusting the disadvantage of pneumatic valve
, working pressure and working temperature range is small.
poor, sealing.
3
pneumatic valve installation, adjustment and maintenance, installation, pneumatic disc to stop in the closed position.
and open position should be according to the butterfly plate to determine the Angle of rotation.
, with the ventilation valve the pneumatic butterfly valve, open the ventilation should be taken before opening valve.
and should be in accordance with the manufacturer's installation instructions for installation, big weight the pneumatic butterfly valve, should set up a solid foundation.
the pneumatic valve, butterfly butterfly plate installed on the diameter of the pipe direction. In cylindrical channels of pneumatic valve pneumatic butterfly valve body and disc disc around the axis of rotation, rotation Angle for ° ~ °, rotate to °, the pneumatic valve is fully open.
butterfly pneumatic valve as traffic control, if required to use, mainly is the right choice of size and type of pneumatic valve. Adjusting the structure principle of pneumatic valve is especially suitable for production of large diameter pneumatic valves. Butterfly pneumatic valve not only in the oil, gas, chemical industry, water treatment and other general industrial used widely, but also applied to the cooling water system of thermal power plants.
and the commonly used pneumatic valve has a wafer butterfly valve pneumatic butterfly valve and flanged butterfly pneumatic valve two kinds. Wafer butterfly valve pneumatic valve pneumatic valve is in the stud connection in place between two pipe flanges, the flange type butterfly is pneumatic valve pneumatic valves with flange, bolts on the pneumatic valve flange connection on the pipe flange on both ends.
the pneumatic valve, butterfly butterfly plate installed on the diameter of the pipe direction. In cylindrical channels of pneumatic valve pneumatic butterfly valve body and disc disc around the axis of rotation, rotation Angle for ° ~ °, rotate to °, the pneumatic valve is fully open.

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