压阀 PRVs ; regulator ; gas pressure regulator ; ZZY

减压阀 RELIEF VALVE ; [机] pressure reducing valve ; [机] reducing valve ; [机] pressure relief valve ; pressure reducing valve

泄压阀 Decompression valves ; pressure release valve

波纹管式减压阀 Bellows reducing valve ; Bellows weal reducing valve ; Bellows seal reducing valve

高压阀门 High pressure valve ; Low pressure valve ; oliver valves ; hellogh pressure valve

背压阀 [机] Back pressure valve ; counterbalance valve ; MACG ; MCAG

中压阀门 Middle pressure valve ; middle pressure ale

恒压阀 constant pressure valve

超高压阀门 Super high pressure valve ; super hellogh pressure valve

低压阀门 Low pressure valve