Magnetically resettable emergency shut-off valve

Details Magnetically resettable emergency shut-off valve Magnetically resettable emergency shut-off valve

1981-06-29

1983-05-10

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

251 65, F16K 1736

Patent

active

043824498

ABSTRACT:
A magnetically resettable emergency shutoff valve (10) is disclosed. A valve member (26) shifts into a seat (28) and blocks flow of a fluid, such as natural gas, through the valve (10) in response to a seismic event of a selected magnitude. Movement of a magnet (32) externally of the valve (10) leads to movement of the ferromagnetic valve member (26) away from the seat (28).

REFERENCES:
patent: 4091831 (1978-05-01), Pazmany
patent: 4207912 (1980-06-01), Ichikawa
patent: 4212313 (1980-07-01), Winters
patent: 4245814 (1981-01-01), Shimizu

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