check valve
noun
a valve permitting liquids or gases to flow in one direction only.
Origin of check valve
First recorded in 1875–80
Words nearby check valve
check out,
check over,
check protector,
check rail,
check up,
check valve,
check-in,
check-over,
checkable,
checkback,
checkbook
Example sentences from the Web for check valve
In the first case, the pipe is provided with a stop-cock, mounted adjacent to the cylinder, and with a check-valve.
Gas-Engines and Producer-Gas Plants |R. E. Mathot
British Dictionary definitions for check valve
check valve
noun
a valve that closes by fluid pressure to prevent return flow
Also called: nonreturn valve