A check valve is used in pipeline systems, primarily to prevent backflow of the medium and to release media from containers. It can also be installed in pipelines supplying auxiliary systems where the pressure may exceed that of the main system.

A check valve, also known as a non-return valve (NRV), reflux valve, retention valve, or one-way valve, is a type of automatic valve that opens and closes based on the flow force of the medium in the pipeline.

Applications:

Used in pipeline systems primarily to prevent backflow of the medium and release media from containers.

Can also be installed in supply lines for auxiliary systems where pressure may exceed that of the main system.