The butterfly valve has the advantages of small volume, low cost, little abrasion, long service life, good sealing effect, high reliability, convenient maintenance and bidirectional sealing.
这种蝶阀的体积小、成本低、磨损少、寿命长、密封性好、可靠性高、维修方便，并具有双向密封。
The butterfly valve has the advantages of small volume, low cost, little abrasion, long service life, good sealing effect, high reliability, convenient maintenance and bidirectional sealing.
这种蝶阀的体积小、成本低、磨损少、寿命长、密封性好、可靠性高、维修方便，并具有双向密封。
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