Pipe burst safety device for natural gas pipe lines or the like

Details Pipe burst safety device for natural gas pipe lines or the like Pipe burst safety device for natural gas pipe lines or the like

1976-05-28

1978-07-18

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

137209, F16K 3112

Patent

active

041009320

ABSTRACT:
A pipe line has a check valve therein, operable by an actuator. The actuator is connected to be operated by fluid pressure from the pipe line, and is connected with the pipe line by a control circuit including valve means. A differential pressure valve is connected in the control circuit, and is constructed to sense a drop in pressure within the pipe line downstream of the control valve. Upon sensing such a pressure drop, the differential pressure valve is effective to cause connection of the actuator to pipe line pressure upstream of the check valve, whereby the latter is automatically closed.

REFERENCES:
patent: 2707483 (1955-05-01), Shafer
patent: 2836192 (1958-05-01), Shafer
patent: 2849987 (1958-09-01), Shafer
patent: 3788341 (1974-01-01), Athy

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