1) Design: ASME B 16.34, 2) Face to face: ASME B 16.10 3) Flanged ends: ASME B 16.5 4) Test and inspection: API 598 5) Body material: Hastelloy C-276, Hastelloy C-4, Hastelloy C-22, Hastelloy C-2000, Hastelloy B-3, Hastelloy G-30 6) Class: 150 ~ 600lbs 7) Driving manner: hand-operated 8) Working mediums: strong corrosive medium 9) We could produce all kinds of valves as per customers' request