Move the valve plate moves from the valve plate cross walk tissue valve plate lower sprocket drive transmission pin to honor.
阀板横挪动作由阀板行走组织的链轮驱动阀板下部的传动销轴来兑现。
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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