check valve(redirected from One-way valve)
Also found in: Dictionary, Medical.
Related to One-way valve: pulmonary artery, Non return valve
check valve[′chek ‚valv]
A device for automatically limiting flow in a piping system to a single direction. Also known as nonreturn valve.
a device that passes a stream of fluid or gas through a pipe only in one direction and closes automatically when the direction of the stream reverses. It is used in various thermal power engineering and production plants.