... hand-regulating expansion valve 手调节膨胀阀 handle for valve stem 阀杆手柄 hanging valve 吊阀; 翻板阀 ...
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It snaps onto the stem and locks into the slot for turning-stops of a ball valve of any material, in place of its standard handle.
它夹在阀杆上，并且锁在槽内，用于任何材料球阀的旋转止动，代替其标准手柄。
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