... 切断阀;截止阀block valve;shut-off valve;stop valve 切断式止回阀stop check valve 切换阀;多向阀changeover valve ...
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... Non-metallic material|非金属材料 non-return valve|切断式止回阀 Non-rising stem|非升杆式(暗杆) ...
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... 底阀 foot vingve 切断式止回阀 stop check vingve; non-return vingve 活塞式止回阀 piston check vingve ...
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... 底阀 foot vingve 切断式止回阀 stop check vingve; non-return vingve 活塞式止回阀 piston check vingve ...
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