1) Design: API 6D 2) Face to face: ASME B 16.10 3) Flanged ends: ASME B 16.5 4) Test and inspection: API 598 5) Material: a) Body: CF8, CF8M, CF3, CF3M b) Bonnet: CF8, CF8M, CF3, CF3M c) Seat: F304, F316, F321, F304L, F316L 6) Pressure: 150 ~ 600lbs 7) Applicable temperature: d232C 8) Working mediums: water, oil, gas and other corrosive medium 9) The sizes of serial valve connecting flange can be designed according to customers' requirement