Safety pressure relief valve shut-off

Details Safety pressure relief valve shut-off Safety pressure relief valve shut-off

1990-04-30

1992-05-19

Michalsky, Gerald A.

Fluid handling

Destructible or deformable element controlled

Destructible element

137347, 137587, 251 57, F16K 1740

Patent

active

051138930

ABSTRACT:
The invention is a normally open safety shut-off valve, totally within a vessel of pressurized product, which vessel requires a safety pressure relief valve. This normally open safety shut-off valve is placed between the safety pressure relief valve and the product in the vessel and can be closed by a person of average intelligence without special tools in the event that an uncontrollable leak develops in the said relief valve, later to spontaneously reopen if the pressure of the product in the vessel rises to a dangerous high level. This is of particular value in the containment of hazardous gases or liquids under pressure in a transportation vessel, without diminishing existing safety pressure relief valve principals.

REFERENCES:
patent: 1801750 (1931-04-01), McEachern
patent: 1960831 (1934-05-01), Shand
patent: 2748799 (1956-06-01), Rath
patent: 3704718 (1972-12-01), Rudel

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