Containment system for flexible underground piping

Fluid handling – With casing – support – protector or static constructional... – Guards and shields

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Details

2851331, 24279, F16L 3500

Patent

active

050545230

ABSTRACT:
Secondary containment of the flexible hose connection between the underground hydrocarbon fuel fiberglass supply pipe and the emergency shut-off valve feeding a gasolene dispensing pump is obtained with a univerally applicable elastomeric corrugated sleeve that is secured at opposite ends, respectively, to the supply pipe and an adapter at the valve by non-metallic clamps. The clamps are of split ring construction with an initial small gap at the end of a projecting lip which is compressed upon tightening a glass reinforced Nylon bolt. This ensures smooth uniform contact with the sleeve for a full 360.degree. circumferentially. Adapters provide the "nipple" surface to which the sleeve is clamped. An air valve is provided in the sleeve to permit pressure testing and to enable leak detection, if desired.

REFERENCES:
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patent: 1497549 (1924-06-01), Conradi
patent: 2690193 (1954-09-01), Smith
patent: 3207533 (1965-09-01), von Gundy et al.
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patent: 4133347 (1979-01-01), Mercer
patent: 4243253 (1981-01-01), Rogers, Jr.
patent: 4854349 (1989-08-01), Foreman
patent: 4886305 (1989-12-01), Martin
patent: 4932257 (1990-06-01), Webb

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