(Relief Valve) A valve that opens to relieve excess temperature and/or pressure in the system.
(relief valve) safety valve: 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
The relief valve (RV) is a type of valve used to control or limit the pressure in a system or vessel which can build up by a process upset, instrument or equipment failure, or fire.
A body temperature above the normal; fever
The degree of internal heat of a person's body
the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)
Temperature is a physical property that quantitatively expresses the common notions of hot and cold. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot.
The degree or intensity of heat present in a substance or object, esp. as expressed according to a comparative scale and shown by a thermometer or perceived by touch
the somatic sensation of cold or heat
The discharge tube on this pressure temperature relief valve is missing