The summary of cylindrical plug pneumatic valve 5)

by:AIRWOLF     2021-01-16



cylindrical plug pneumatic valve in a certain extent, depends on the use of pneumatic valve plug with pneumatic valve seal. General cylindrical plug pneumatic valve often use four kinds of sealing method, namely using sealant, using pneumatic valve plug expansion, the use of seal ring, the use of eccentric plug wedge pneumatic seat sealing. Cylinder lubrication cock pneumatic valve sealing by pneumatic valve plug and pneumatic valve body between the sealant to achieve. Sealant is bolted or injection gun by pneumatic valve plug pole into the sealing face, so when the pneumatic valve in use, can be added by injecting sealant to effectively make up for the inadequacy of the seal. Because of the sealing surface in full open position when being protected and not in contact with the liquid medium, so lubrication pneumatic valve plug is particularly suited to abrasive medium. But lubrication pneumatic valve plug should not be used for throttling, this is because the throttle when from revealing the hedge sealants seal face, so that every time the pneumatic valve is closed, to pneumatic seat sealing for reply. The faults of the pneumatic valve is sealant to add artificial often needed to do, using automatic injection can overcome this shortcoming, but need to increase the cost of carry equipment. Once due to lack of maintenance or due to the sealant choosing inappropriate, or between the sealing surface produce the crystallization and pneumatic valve plug in the pneumatic valve body cannot turns, at this moment must be for pneumatic valve and clean or repair. Pneumatic valve, cylindrical plug in pneumatic valve body is equipped with a teflon sleeve and pneumatic valve plug seal, it USES compression nut pressure in the pneumatic valve body, by the pneumatic valve plug expansion force of teflon sleeve to seal. Keywords:
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