Adapter assembly for accessing primary pipeline of a double wall

Details Adapter assembly for accessing primary pipeline of a double wall Adapter assembly for accessing primary pipeline of a double wall

1997-09-18

1999-11-02

Chambers, A. Michael

Fluid handling

With vehicle guide or support, e.g., service station

137312, 137377, 137315, 251 76, 73 405R, 73 491, G01M 304

Patent

active

059751100

ABSTRACT:
An adaptor assembly connects a primary pipeline of a double wall pipeline to a dispensing pipeline at a ground level gasoline service station dispenser unit in a manner which permits access to the primary pipeline for installation and periodic replacement purposes. The assembly includes a casing and a disengageable seal system. The casing is attached to a terminus of the secondary pipeline. The disengageable seal system is operably associated with the casing to terminate an annular space between the primary pipeline and the secondary pipeline to contain the flow of any leakage from the secondary pipeline. In some embodiments of the invention, a coupling is attached to a terminus of the primary pipeline to provide a flowpath for conveyance of gasoline. The disengageable seal system is also operably associated with the coupling. The seal system allows the primary pipeline to be accessed and removed from the double wall pipeline system without disconnecting or otherwise disturbing the secondary pipeline's connection to the casing.

REFERENCES:
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patent: 5301721 (1994-04-01), Hartmann
patent: 5333490 (1994-08-01), Webb

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