Safety device against ruptures in gas pipes

Details Safety device against ruptures in gas pipes Safety device against ruptures in gas pipes

1998-01-07

2000-04-04

Chambers, A. Michael

Fluid handling

With indicator, register, recorder, alarm or inspection means

Fluid pressure responsive indicator, recorder or alarm

137460, 137554, E03B 707

Patent

active

060448636

ABSTRACT:
A safety device against ruptures in gas pipes comprises a housing (11) with a cavity (12) and a plunger (13) movable to and fro in the cavity (12). The plunger (13) has parts (14, 15) in engagement with the wall of the cavity and two influencing surfaces (23, 24) of different sizes. The smaller influencing surface (23) communicates with a main pipe (25) from a gas source to a user. The larger influencing surface (24) communicates with a control pipe (28) from the main pipe (25) spaced from the device. The plunger (13) influences the gas flow in the main pipe (25) with its movement and/or indicates a pressure drop in the control pipe (28).

REFERENCES:
patent: 2926690 (1960-03-01), Martin
patent: 4223692 (1980-09-01), Perry
patent: 4732190 (1988-03-01), Polselli
patent: 5228469 (1993-07-01), Otten et al.
patent: 5257014 (1993-10-01), Zimmermann

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