Flange by pneumatic valve working principle and structure of 3)

the handwheel clockwise, dry down, down, make the pneumatic valve seal, seal face channels cut off. A recession is open, its highest level for pneumatic stem seal work.
of pneumatic valve seal. In pneumatic valve open state, there are two sealed packaging, packaging protective layer
, pneumatic valve sealing surface made of nylon products, packaging for the shape of the soft sealing packing, soft material, sealing performance. Keywords:
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