逆止阀 [机] check valve ; [机] non-return valve ; backflow barrier ; nonreternvalve

逆止线 Non-return vlv ; Neon tester

逆止球 check ball ; Diaphragm

抽汽逆止阀 extraction check valve ; extraction non-return valve ; FFRCV

黄铜横式逆止阀 brass swing check valve

滚柱逆止器 roller brake

逆止器 NYD ; Back stop ; NJZ ; Inverted molding machine

带式逆止器 belt brake

双逆止阀装置 double check-valve assembly

油动逆止阀 oil-actuated check valve ; actuated check valve