1)High quality UPVC swing check valve 2)Size:DIN25-250 3)Standard:HG,ANSI,DIN, HG 4)Pressure: 0.5-0.7MPA High quality UPVC swing ... check valve 1.Item: High quality UPVC swing check valve2.Size:DN25-DN2503.Material ... :UPVC,CPVC,FRPP,PVDF,PPH4.Standard:HG,ANSI, DIN, ...