... alloy,nickel,zirconium,hastelloy,ect size:DN25~DN250 swing check valve-titanium1.work pressure:PN2.5,PN10,PN16,ect2. ... through,Angle valves,Y type.3.linkage:flange,thread4.valve clack:ball, plane seal embolization, cone seal ... embolization.5.standard:GB/T12235-1989Trade terms:1.payment terms: by T/ ... is available, OEM or ODM is welcome. swing check valve-titanium