A liquid stop valve in which the stopper is formed by locally freezing the stopped liquid itself.

plural of valve oil

A valve designed to open when subjected to a given amount of pressure. Also used figuratively.

(anatomy) A valvular fold at the end of the pyloric canal which lets food pass from the stomach to the duodenum.

A slide valve with a cup-like cavity in its face, through which exhaust steam passes.

A valve fitted in the bottom of a ship's fuel, water or ballast tank that allows seawater to enter for the purposes of cleaning and to admit water ballast.

snifting valve

A small valve opening into the atmosphere from the cylinder or condenser of a steam engine, to allow the escape of air when the piston makes a stroke.

(anatomy) The valve that divides the left atrium and left ventricle of the heart.

(engineering) A simple type of valve, consisting of one or more circular plates held down by a spring.