Our api check valves are mainly used for high-pressure applications and workover equipment. 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.
 
API 1502 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 H2S environments.
 
The model of check valve available: D×F70-2″×2″,D×F105-2″×2″,D×F70-3″×3″,D×F105-3″×3″, rated: 6000psi(42MPa)~20000psi(140MPa).
 
API 1502 check valves