Safety valve Meaning, Definition & Usage
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noun 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
escape; relief valve; escape valve; escape cock.
WordNet
Definitions
- a valve which is held shut by a spring or weight and opens automatically to permit the escape of steam, or confined gas, water, etc., from a boiler, or other vessel, when the pressure becomes too great for safety; also, sometimes, a similar valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, to prevent collapse.
