relief valve

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Definitions from WordNet

Noun relief valve has 1 sense

safety valve, relief valve, escape valve, escape cock, escape - a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level
--₁ is a kind of valve; regulator

Definitions from the Web

Term: Relief Valve

Definition:

A relief valve is a type of valve used to control or limit the pressure in a system by releasing excessive pressure when it exceeds a set threshold.

Senses:

Sense 1: A mechanical device installed in a system that automatically opens when the pressure becomes too high, releasing fluid, gas, or steam to prevent damage or failure.
Sense 2: In the field of psychology, a relief valve refers to an activity, hobby, or outlet that helps to reduce or release stress.
Sense 3: In terms of emotions, a relief valve is an action or expression that provides a release or outlet for pent-up feelings.

Examples:

The relief valve on the boiler opened to release excess steam and prevent an explosion.
John found painting to be a relief valve for his stress and anxiety.
Crying can act as a relief valve, allowing one to release built-up emotions.