Double-walled flexible dispenser sump connection system

a flexible dispenser and connection system technology, applied in the direction of functional valve types, liquid transfer devices, couplings, etc., can solve the problems of fuel leakage into the groundoil surrounding the dispenser sump and/or into the atmosphere, and the cost of retrofitting the existing sumps to bring them into compliance can be substantial, so as to prevent any fuel leakage, protect the effect of the dispenser, and reduce the cost per dispenser

Inactive Publication Date: 2006-08-24
FLEX ING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006] The present invention comprises a dispenser sump connection system which overcomes the foregoing and other difficulties which have long since characterized the prior art. In accordance with the broader aspects of the invention, an outer and inner flexible connector system provides protection against fuel leakage from the dispenser sump. The inner flexible connector connects the primary inner pipe to the shear valve. The outer flexible connector completely encloses the inner flexible connector from the sump wall to the shear valve

Problems solved by technology

Therefore, there are no safeguards to detect or contain leaks that occur inside the dispenser sump 18, which can result in leaks into the groundsoil surrounding the dispenser sum

Method used

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Embodiment Construction

[0013] Referring now to the Drawings, and particularly to FIGS. 2, 3, and 4 thereof, there is shown the dispenser sump connection system 30 of the present invention. An inner flexible connector 32 is connected to the inner pipe 16 for completing the conveyance of fuel to the dispenser 12. An outer flexible connector 34 is installed over and completely encloses the inner flexible connector 32. The lower end of the outer flexible connector 34 is connected in fluid communication with the outer pipe 26. The upper end of the outer flexible connector 34 is connected to the shear valve 24 thereby completing the containment of any leaks from either the inner pipe 16 and the inner flexible connector 32. The interstitial space between the outer flexible connector 34 and the inner flexible connector 32 is either pressurized or vacuum sealed thereby preventing any fuel leakage into the dispenser sump 18. The flexible connectors 32 and 34 used in conjunction with the present invention are descri...

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Abstract

A double-walled flexible dispenser sump connection system prevents fuel leaks into a dispenser sump located below a fuel dispenser. An inner flexible connector and an outer flexible connector are configured such that the dispenser sump connection system may be installed on newly constructed fuel delivery systems or be retrofitted onto existing fuel delivery systems in order to bring them into compliance with recently environmental regulations.

Description

TECHNICAL FIELD [0001] This invention relates generally to fuel dispenser sumps used in gas stations and in similar applications, and more particularly to a double-walled flexible dispenser sump connection system that provides a safeguard against leaks from dispenser sumps located beneath the gasoline dispensers. BACKGROUND AND SUMMARY OF THE INVENTION [0002] State environmental and energy agencies require strict compliance with laws and regulations regarding fuel storage and conveyance, in particular regarding containment of fuel within the pipes and other components beneath the ground surface at gas stations. Piping systems for conveying the fuel between the underground tanks and dispensers must be pressurized and vacuum sealed to detect and contain leaks therein. [0003] Referring to FIG. 1, there is shown a common dispenser sump connection system 10 below a dispenser 12 at a gas station. Fuel is conveyed from a tank 14 through a primary inner pipe 16, traditionally two inches in ...

Claims

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Application Information

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IPC IPC(8): F16L37/28
CPCB67D7/3209B67D7/3218F16L23/10F16L39/00Y10T137/1654Y10T137/265Y10T137/5762
Inventor INGRAM, THOMAS L.
Owner FLEX ING
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