Features
1.Size: 2″ – 32″
2.Class: 150lbs – 900lbs
3.wafer type,Single disc design
4.Body and bonnet: carbon steel and stainless steel
5.Disc:carbon steel and stainless steel
6.Spring: Stainless steel (SS)
7.The check valve is widely used in oil, water, gas, chemical industry and other fields

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