Flanged & Butt-welding ends shing check valves are used in pipes under pressures between PN1.6~16.0MPa,Class150~900Lb, working temperatures between -29- 570°C, They are used in industries include oil, chemistry,pharmaceutical, fertilizer, and power generation to prevent the backward flux of the media.Main structural features:

1. Rational structure, reliable sealing, excellent performance, pretty appearance.

2. Cobalt base alloy welded sealing surface, anti-wearing, erosion-proof abrasion-proof and longer use life.

3. Inside-set bolt-bearing structure reduces leakage and reliable use.

4. Under pressures rating equal to or greater than ≥16.0 MPa, Class1500, the valve belly, self-tightening structure offers a tighter sealing for a higher medium pressure.

5. Different parts materials and different sizes for flange, butt-welding are available for sensible combination according to different working facts and customers' requirements.