Specifications: 1) Construction features: os&y, rising stem, flexible wedge, bolted bonnet, threaded or welded seat ring 2) Standard compliance: a) Basic design: API 600 b) Face to face dimension: ANSI B16.10 c) Flanged ends dimensions: I) 2 - 24" to ANSI B16.5 II) 26 - 36" to MSS SP-44 III) API 605 on request IV) B.W. ends to ANSI B16.25 d) Shell wall thickness: I) 2 - 24" to API 600 II) 26 - 36" to manufacturer's standard 3) Manufacturing to NACE MR 01-75 on request