Process and apparatus for sealing gas lines

Details Process and apparatus for sealing gas lines Process and apparatus for sealing gas lines

1979-09-10

1981-02-10

Footland, Lenard A.

Pipes and tubular conduits

With closures and plugs

Lateral opening

138 97, F16L 5510

Patent

active

042495776

ABSTRACT:
A safe, easy and fast procedure and apparatus for sealing by welded steel plugs branch lines connected to conduits through which gas is flowing, uses a low-carbon steel plug which does not develop cracks on cooling from welding temperature; such plug is arranged to carry a resilient sealing and holding element for locating such plug in place in a cut branch line during welding as well as providing a seal against gas passage during welding. A hard metal die element is provided to properly enlarge and form the cut branch line to accept the plug and resilient sealing and holding element.

REFERENCES:
patent: 3674055 (1972-07-01), Ray
patent: 3785291 (1974-01-01), Bergbauer et al.
patent: 3948282 (1976-04-01), Yano
patent: 4153067 (1979-05-01), Ray

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