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NEWS

The sealing principle of the cylindrical PTFE sealing plug valve

Time:2015-09-02 15:13:00 Source:YANGZHONG HAITENG FLUORINE PLASTIC PRODUCT FACTORY
Cylindrical PTFE sealing plug valve, Teflon sleeve are arranged in the valve body and valve plug a matched, it is pressed with a compression nut in the valve body seat, which is sealed by a valve plug and a Teflon sleeve to ask certain interference to realize, that is the valve plug on the Teflon sleeve extrusion the pressure to achieve seal. Therefore, the surface of the valve plug and Teflon sleeve for the roughness must be small, its geometry error must be small, in order to achieve the required pressure seal. If the seat sleeve again pressed so that recovery sealing sleeve, it must be in the valve closed position to prevent the yellow, Teflon sleeve pressure flow.
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