Ptfe sealing principle of pneumatic valve seal cock 3)

cylindrical ptfe sealing plug pneumatic valve, pneumatic valve body is equipped with a combination of ptfe and pneumatic plug socket, it USES compression nut on the pressure in the pneumatic valve body seat, the seal is pneumatic plug and teflon sleeve by asking a certain amount of interference, which is pneumatic valve plug of teflon sleeve extrusion pressure to seal. Therefore, requirements of pneumatic valve plug and teflon sleeve surface roughness value must be small, its geometry error must be small, also can achieve the required pressure seal. If pneumatic seat sleeve need to pressure in order to restore the sleeve sealing, must be closed in the pneumatic valve a yellow, in order to prevent the teflon sleeve pressure flow within the tao. Keywords:
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