Measuring and testing – With fluid pressure – Leakage
Patent
1990-08-17
1992-08-25
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
156 64, G01M 326
Patent
active
051408481
ABSTRACT:
A plastic liner pipe penetration adapter designed for sealably penetrating a moisture impervious thermoplastic sheet or liner, particularly suitable for lining reservoirs, hazardous waste disposal sites, outdoor fluid containment areas and other similar applications, without damaging the sealing characteristics of the liner and which also allows field testing of the sealability of the liner after the installation of the adapter. In one embodiment, an inner tubular housing member defining a passage through the liner is inserted through a plate and connected thereto. An outer tubular housing member is coaxially aligned about the inner tubular housing member and sealably welded at a first end to the plate. An annular end piece is inserted over the inner tubular housing member in order to seal a second end of the outer tubular housing member to the inner tubular housing member, thereby creating a pressure test chamber between the tubular housing members and the annular end piece. A pressure test port is installed in the outer tubular housing member so that the seals created by the welding can be pressure tested by pressurizing the pressure test chamber. A flexible skirt is sealably attached at an inner edge to the plate, and at an outer edge to the liner.
REFERENCES:
patent: 4741199 (1988-03-01), Spencer
Gundle Lining Construction Corporation
Roskos Joseph W.
Williams Hezron E.
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