升降式止回閥
Lift check valve
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旋啟式止回閥
Swing check valve
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對夾式升降式止回閥
Wafer lift check valve
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對夾蝶式止回閥
Butterfly butterfly check valve
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立式止回閥
Vertical check valve
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鍛鋼止回閥
Forged steel check valve
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內(nèi)螺紋止回閥
Internal thread check valve
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襯氟止回閥
Fluorine-lined check valve
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