Shock shutoff valve

Details Shock shutoff valve Shock shutoff valve

1978-08-14

1980-07-15

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

With second control

251 65, F16K 1736

Patent

active

042123135

ABSTRACT:
A shock shutoff valve, especially for earthquake zones, has a valve body with a normally vertical flow bore therein controlled by a plug rotatable within the valve body. A portion of the flow bore in the plug is so movable between an open position and a closed position. A pedestal in the flow bore is adjacent a seat around the plug portion of the flow bore. A ball resting on the pedestal can be dislodged by shock to move from the pedestal and roll into the seat and so block the flow bore. The seat and the ball are of mutually attracting magnetic materials effective to urge the ball and the seat together not under normal conditions but when the valve body has been displaced and the flow bore is inclined to the vertical.

REFERENCES:
patent: 2585316 (1952-02-01), Hobson
patent: 3026903 (1962-03-01), Roach
patent: 3468338 (1969-09-01), Patterson
patent: 3747616 (1973-07-01), Lloyd
patent: 3850189 (1974-11-01), Follet

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