Butterfly valve type flap valve for two-way flow channel and application method of butterfly valve type flap valve
The invention discloses a butterfly valve type flap valve for a two-way flow channel and an application method of the butterfly valve type flap valve. The butterfly valve type flap valve comprises a first baffle and a second baffle, a flap valve shaft for fixing the flap valve and the two-way flow c...
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Format: | Patent |
Sprache: | chi ; eng |
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