Rockable earthquake valve

Details Rockable earthquake valve Rockable earthquake valve

1990-10-10

1991-07-09

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

F16K 1736

Patent

active

050296019

ABSTRACT:
A safety valve for automatically shutting-off fluid flow in response to excessive vibration specifically indicated for use as a seismically actuated gas valve. The inlet and outlet ports are separated by an horizontal septum having an aperture defining a circular valve seat. A ferrous ball is suspended above the aperture by a permanent magnet housed in a spherical member adjustably mounted in the roof of the valve above the aperture. The member houses a bulb-type level indicator used to adjust the position of the magnet in order to compensate for any askew position of the valve resulting from the orientations of the connecting pipes.

REFERENCES:
patent: 1180482 (1916-04-01), Flanders
patent: 2585316 (1952-02-01), Hobson
patent: 3783887 (1974-01-01), Shoji
patent: 4331171 (1982-05-01), Novi
patent: 4336818 (1982-06-01), Dauvergne
patent: 4382449 (1983-05-01), Nelson
patent: 4485832 (1984-12-01), Plemmons et al.
patent: 4565208 (1986-01-01), Ritchie et al.
patent: 4640303 (1987-02-01), Greenberg
patent: 4799505 (1989-01-01), Nowell
patent: 4844113 (1989-07-01), Jones

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