1) Size: 3" - 40"
2) Class: 150lbs - 900lbs

Technical standards:
1) Design and manufacture: API 6D
2) Face-to-face: ANSI B16.10
3) Flange end: ANSI B16.5
4) Inspection and test: API 598

Main materials:
1) Body: CS/SS - WCB, WCA, WCC, A351, A744, 304, 304L, 316, 316L
2) Disc: Stainless steel - A351, 420S, S42000, 304, 304L, 316, 316L
3) Stem and sealing surface: A351, A744, 304, 304L, 316, 316L