Cylindrical plug pneumatic valve (2)

some cock between the pneumatic valve cylinder used depends on the pneumatic valve core and the extent of the pneumatic valve sealing condition. Generally four cylindrical plug seal way, which often use the use of the sealant, the expansion of the plug, ring, use a seat on the cock eccentric wedge ring. Pneumatic valve cylinder lubrication between by plug and seal pneumatic valve seal cock pneumatic valve. Sealant is injected with a bolt gun or by a pneumatic valve sealing surface insert rod, so, when the pneumatic valve in use, can add sealant injection, to effectively make up for the shortage of the seals.
in the fully open position sealing surface from the media exposure and liquidity to protect, so especially suitable for lubrication cock pneumatic valve grinding medium. Lubrication cock pneumatic valve, but cannot be used for cutting, because the gas will be washed from the sealant seal face exposed, so each pneumatic valve closing, behind the seat of the seal.
the downside, pneumatic valve seal often need to manually perform supplement, while automatic injection to overcome this defect, but need to increase equipment, increase the cost of equipment. Once due to lack of maintenance or due to improper, or crystal between the sealing surface and pneumatic valve core in the body can't rotate sealant election, you must remove or repair pneumatic valves.
cylindrical plug pneumatic valve, pneumatic valve and pneumatic valve core ptfe sealing set and equipment, it is pressed in the pneumatic valve body gland nut, the ptfe expansion force by the pneumatic valve core sleeve seal. Keywords:

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