Bellows expansion joint

Details Bellows expansion joint Bellows expansion joint

1983-08-04

1986-03-18

Scanlan, Jr., Richard J.

Pipe joints or couplings

With heating or cooling

285 50, 285226, 285227, F16L 5300

Patent

active

045764042

ABSTRACT:
A novel bellows expansion joint design and method of preventing stress corrosion cracking incorporates an internal cylindrical weir or sleeve which defines an inner flushing chamber adjacent the expansion bellows wherein connections are provided on the exterior wall of the expansion joint body to allow the admission of a chemical solution or treating fluid directly onto the inside surface of the bellows from an external connection to the expansion joint. In addition, a further connection is provided to a second flushing chamber surrounding the exterior of the bellows so that a similar solution may be admitted and allowed to overflow from an upper portion of the chamber.

REFERENCES:
patent: 2520751 (1950-08-01), Zucrow
patent: 2536793 (1951-01-01), Andersson et al.
patent: 3127200 (1964-03-01), Sayag
patent: 3186721 (1965-06-01), Petri
patent: 3232640 (1966-02-01), Donkle, Jr.
patent: 3488067 (1970-01-01), Sommer
patent: 3517949 (1970-06-01), Hirai et al.
patent: 3811713 (1974-05-01), Barrett et al.
patent: 3874708 (1975-04-01), Gresens
patent: 3901539 (1975-08-01), Ijzerman
patent: 4045056 (1977-08-01), Kandakov et al.
patent: 4165107 (1979-08-01), Affa et al.

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