The NIBCO® bronze Ring Check® valve is uniquely designed with an in-line, spring assisted self-closing disc. The lift check valve prevents backflow by automatically closing when fluid reverses direction. With a Buna-N disc, the check valve is recommended for water, oil or gas service.

The NIBCO® Ring Check® valve has threaded end connections for ease of installation. This check valve may be installed in horizontal positions or vertical with flow moving up.