API Check valves are mainly used for high-pressure applications and workover equipment.API check valve.
 
Sizes range from 2″ to 3″. The model of check valve available: D×F70-2″×2″,D×F105-2″×2″,D×F70-3″×3″,D×F105-3″×3″
 
They are usually installed in high-pressure pipelines for preventing fluid from flowing back. When fluid is pushed back, a retainer plate will automatically close.
 
Check valves, forged of high-strength alloy steel based on US technologies, are fitted with unions on both ends for easy dismantlement. The retainer plate inside sulfidized with Buna-N has a good sealing effect and a longer service life under high pressure, for conventional or H S environments.