... screw lift mixer-settler 螺旋升液混杂沉降器 screw lift valve 螺旋提升阀 screw lock baffle ring 螺钉锁紧挡圈 ...
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screw-lift valve 螺旋提升阀
inside screw lift check valve 内螺纹升降式止回阀
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Unscrew the Allen screw in the middle of valve cap and lift up the cap just enough to pick up the old diaphragm.
旋松阀帽中间的内六角螺丝，并且提起阀帽，正好足够拿走旧阀膜。
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