Plastic CPVC spring check valve Dimension: DN 25-250 Standard: HG,JIS,DIN,ANSI Pressure:0.4-06mpa Plastic CPVC spring check valve 1.Item ... : Plastic CPVC spring check valve2.Size:DN25-DN2503.Material:UPVC,CPVC ... ,FRPP,PVDF,PPH4.Standard:HG,ANSI, DIN,JIS 5.Type: ball,swing our ...