Safety device for gas supply pipe

Details Safety device for gas supply pipe Safety device for gas supply pipe

1977-01-04

1978-07-04

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

With second control

137456, 137613, 251 68, 251 70, F16K 1736

Patent

active

040982840

ABSTRACT:
A gas supply pipe is provided with a terminal shutoff valve upstream of a heater, stove or the like. An automatic shutoff valve is provided to the gas pipe upstream of the terminal shutoff valve which automatically closes upon receipt of an electrical signal from an earthquake sensor, fire detector, gas leak detector or other sensor indicating a dangerous condition. A gas pressure sensor provided between the automatic shutoff valve and the terminal shutoff valve prevents the automatic shutoff valve from being manually reset unless the terminal shutoff valve is closed, thereby preventing an explosion which might result if gas were fed to the heater or stove with the pilot light extinguished.

REFERENCES:
patent: 2652065 (1953-09-01), Kutzler
patent: 3506033 (1970-04-01), Haney

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