Features
1.Size:NPS 2″ – 48″
2.Pressure rating: 150lbs – 900lbs
3.Main materials:
(a)Body and bonnet: Cast iron, ductile cast iron, carbon steel
(b)Ball: Carbon steel + NBR

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