Flow and seismic sensitive safety valve for gaseous fluids

Details Flow and seismic sensitive safety valve for gaseous fluids Flow and seismic sensitive safety valve for gaseous fluids

1989-04-06

1989-11-28

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

With second control

137460, 251 65, F16K 1736

Patent

active

048830810

ABSTRACT:
A vibration and flow sensitve safety valve for gaseous fluids using a sphere of ferrous material as a valve plug, the ball being held in a sensitive, suspended condition positioned above its valve seat, by a permanent magnet. The magnetic attraction is such that a significant tremor or a significant pressure drop below the ball resulting from excessive flow through the venturi gap between the ball and its valve seat will dislodge the ball, allowing it to drop and plug the valve passage.

REFERENCES:
patent: 4207912 (1980-06-01), Ichikawa
patent: 4640303 (1987-02-01), Greenberg
patent: 4785842 (1988-11-01), Johnson

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