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['seiftivælv]
общая лексика
предохранительный клапан
выход
отдушина
строительное дело
предохранительный (защитный) клапан
множественное число
предохранительная арматура
общая лексика
предохранительный клапан
общая лексика
пружинный клапан
строительное дело
предохранительный клапан
нефтегазовая промышленность
разгрузочный клапан
строительное дело
положение безопасности, безопасное расположение (груза и т. д.)
A safety valve is a valve that acts as a fail-safe. An example of safety valve is a pressure relief valve (PRV), which automatically releases a substance from a boiler, pressure vessel, or other system, when the pressure or temperature exceeds preset limits. Pilot-operated relief valves are a specialized type of pressure safety valve. A leak tight, lower cost, single emergency use option would be a rupture disk.
Safety valves were first developed for use on steam boilers during the Industrial Revolution. Early boilers operating without them were prone to explosion unless carefully operated.
Vacuum safety valves (or combined pressure/vacuum safety valves) are used to prevent a tank from collapsing while it is being emptied, or when cold rinse water is used after hot CIP (clean-in-place) or SIP (sterilization-in-place) procedures. When sizing a vacuum safety valve, the calculation method is not defined in any norm, particularly in the hot CIP / cold water scenario, but some manufacturers have developed sizing simulations.
The term safety valve is also used metaphorically.