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an automatic safety valve
2012-06-11
A Safety valve that automatically, without using any form of energy than the liquid in the discharge quantity of liquid, so as to prevent a predetermined safe pressure is higher, and closed again to prevent the flow of more volatile after the normal working pressure were restored. Note that the valve can be characterized by a pop-action (quick opening) or open relationship (not necessarily linear) on increasing pressure over the whole pressure.
Safety valves were first used on steam boilers during the industrial revolution. Early
boilers without them were prone to accidental explosion.
Vacuum
safety valves (or combined pressure/vacuum safety valves) are used to prevent a
tank from collapsing while emptying it or when cold rinse water is used after
hot CIP or SIP. The calculation method is not defined in any norm when sizing a
vacuum safety valve, particularly in the hot CIP / cold water scenario, but some
manufacturers have developed simulations to do so.
More products of valves
