in recent years, from the seal flush after pneumatic valve, the flow direction of medium by the pneumatic valve is replaced by pneumatic disc into the pneumatic valve cavity above, under the effect of medium pressure at this moment, close the pneumatic valve is small, the force and the great strength of pneumatic valve, pneumatic valve stem diameter can be reduced accordingly.
At the same time, in the role of media, this kind of pneumatic valve is tight.
Pneumatic valve in China 'three for' was defined, by the flow of the pneumatic valve shall be applied.
Internally by the introduction to the basic overview of the pneumatic valve fluorine-butterfly by pneumatic valve belong to mandatory sealed pneumatic valves, so in the pneumatic valve closed, necessary to pressure pneumatic disc, to force a sealing surface does not leak.
When medium by pneumatic disc below into the pneumatic valve 6, manipulation of the force required to overcome the resistance, is pneumatic stem and packing of the friction force and the thrust produced by medium pressure, close the pneumatic valve force than the pneumatic valves open force is big, so the larger the diameter of the pneumatic valve stem, or pneumatic stem top bending failure happens.
In recent years, from the seal flush after pneumatic valve, the flow direction of medium by the pneumatic valve is replaced by pneumatic disc into the pneumatic valve cavity above, under the effect of medium pressure at this moment, close the pneumatic valve is small, the force and the great strength of pneumatic valve, pneumatic valve stem diameter can be reduced accordingly.
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At the same time, in the role of media, this kind of pneumatic valve is tight.
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Pneumatic valve in China 'three for' was defined, by the flow of the pneumatic valve shall be applied.
Lining fluoride by pneumatic valve opens, pneumatic valve opening, for nominal diameter % ~ %, traffic has reached maximum, said the pneumatic valve to full open position.
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So by the pneumatic valve fully open position, should be determined by pneumatic disc trip.
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Structural characteristics of pneumatic valve and brake, as the structure of the pneumatic valve is simple, manufacture and maintenance are more then.
Sealing surface is not easy to wear, abrasion, good sealing, long service life.
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Open/close the pneumatic valve stroke lesser, opening and closing time is shorter, pneumatic valve height smaller.
Pneumatic valve and pneumatic valve stem design structure, compact structure, the use of safe.
As there are three kinds of pneumatic valve structure forms: through type, once-through, Angle type, through type is most commonly used.
Angle type can be installed in the corner of the pipeline system, once-through flow resistance is the smallest by the pneumatic valve.
According to user needs with pneumatic, electric devices, satisfied the needs of the remote control and programmed control.
Replacement parts lining material can be used in a variety of media.
Product use share in various concentrations of minus 50 degrees Celsius to one hundred and fifty degrees Celsius aqua regia, flow acid, hydrochloric acid, hydrofluoric acid and various kinds of organic acid, strong acid, strong oxidizer, also applicable to all kinds of organic solvent concentration of alkali erosion and other gas, liquid medium used on the pipeline.
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