Swing Check valves are heavy duty, bolted cover, welded or threaded seatring, and body Mounted disc swing type.

A check valve or non-return valve which normally allows to flow through it in only one direction.

Check valves are two-port valves, means they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Although they are available in a wide range of sizes and costs, Check valves work automatically and most are not controlled An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate.