Pipe layout with opposing incline

Details Pipe layout with opposing incline Pipe layout with opposing incline

1997-03-25

1999-09-21

Brock, Michael

Measuring and testing

With fluid pressure

Leakage

138114, 1372361, 137312, 137363, G01M 318, F17D 108

Patent

active

059556579

ABSTRACT:
A pipe layout system for secondary containment includes alternating deep and shallow penetration holes in containment boxes installed below gasoline dispensers, and a double-walled pipeline inclined downward from each shallow box to an adjacent deep box. Each deep box has a fitting which closes the end of the secondary piping within the containment box. These fittings have apertures positioned to face downward and communicating with a conduit which leads to a sensor mechanism at the low point of the conduit. If there is leaking gasoline within the secondary pipes, it will flow to the deep box, through the hole, and down to the sensor. A small amount of gasoline is all that is necessary to trip the sensor and shut down the primary product pipeline. In the shallow boxes, the same fitting is used to close the ends of the secondary piping, and the aperture therein is preferably positioned upward. A jumper hose may be used between the apertures and the fitting in the shallow box to pressure-test the secondary line. The invention enables production of only two types of boxes, a deep box and a shallow box, regardless of how many dispensers are connected along the same product pipeline. An exception is that an end of the product line box will have only one penetration hole.

REFERENCES:
patent: 3721270 (1973-03-01), Wittgenstein
patent: 4842163 (1989-06-01), Bravo
patent: 4971225 (1990-11-01), Bravo
patent: 4971477 (1990-11-01), Webb et al.
patent: 5100024 (1992-03-01), Bravo
patent: 5257652 (1993-11-01), Lawrence
patent: 5285829 (1994-02-01), Bravo
patent: 5341857 (1994-08-01), Bravo
patent: 5527130 (1996-06-01), Webb
patent: 5529098 (1996-06-01), Bravo
patent: 5590981 (1997-01-01), Osborne

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