... valve stem gauge 阀杆规 valve stem pin 阀杆销 valve sticking 气门咬住 ...
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valve-stem pin 阀杆销
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Play great positioning pin ensures disc not because butterfly plate gravity drop, also can be installed in the valve stem end adjustment block to ensure that the butterfly plate fixed position.
弹赞定位销可保证蝶板不会因为蝶板重力作用下坠，还可在下阀杆端部设置调整块来保证蝶板位置固定。
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