Super Duplex Swing Check Valve

Super Duplex Swing Check Valve Body: Super Duplex Stainless Steel 4A, 5A, 6A, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6, WC9, C5, C12, LCB, CF3M Disc: Super Duplex Stainless Steel, Duplex Stainless Steel, Alloy 20, CN7M, Hastelloy, Carbon Steel, WC6, WC9, C5, C12, LCB, CF3M, Super Duplex Stainless Steel 4A, 5A, 6A Trim: SS304, SS316, SS304L, SS316L, 13%Cr.Steel, Stellite, Hastelloy, Alloy 20, Duplex Stainless Steel, Super Duplex Stainless Steel Gland Packing: Graphite, PTFE <p