relief valve

noun

1. a device that, when actuated by static pressure above a predetermined level, opens in proportion to the excess above this level and reduces the pressure to it. Compare safety valve ( def 1 ).

Example Sentences

We had a multitude of relief valves and reviews and things like that.

From Freakonomics

As the pressure lowers, the excess gas can escape through a relief-valve.

From Project Gutenberg

The turbine relief valve is shown at F, and the condenser relief valve at G.

From Project Gutenberg

The exhaust would then be blown through the turbine relief valve F, until the plant could be closed down.

From Project Gutenberg

A similar test over an equal period may then be conducted with the relief valve not water-sealed.

From Project Gutenberg

Nor is it less important that careful attention be given to the setting and operation of the relief valve, as will be seen later.

From Project Gutenberg