API Gate Valve Certification:API6A,ISO9001, Size: 1-13/16"~9" Pressure: 2000~20000psi Material: AA-HH API6A Gate Valve Certification:API6A,ISO9001,Size: 1-13/16"~9" Pressure: 2000~20000psiMaterial: AA-HHSuitable medium: water, oil, gas.... 1.forged or cast body & bonet2.metal-to-metal seat to body interface3.gate & seat design for slab gate 4.gate & seat design for expanding gate5.Bi-directional ...