Gasoline vapour recovery method and apparatus

Details Gasoline vapour recovery method and apparatus Gasoline vapour recovery method and apparatus

B - Operations, Transporting

65

D

B65D 90/30 (2006.01) B67D 7/04 (2010.01) B67D 7/32 (2010.01) B65D 90/28 (2006.01) B65D 90/34 (2006.01) F16K 17/196 (2006.01)

Patent

CA 2269423

This invention relates to an improved gasoline vapour recovery method and apparatus used in association with underground or inground gasoline storage tanks normally vented to atmosphere. The operation of filling the underground tank creates pressure creating gasoline vapours which either directly exhaust to atmosphere or are collected by means of a recovery system in the gasoline delivery truck. According to this invention an apparatus is provided for installation on the venting system comprising a chamber having a first valve means adapted to close in response to a first pre-determined pressure in the chamber. This closure enhances and improves the gasoline vapour recovery operation. A second valve means is provided adapted to open in response to a second and higher pre-determined pressure in the chamber in order to exhaust the pressure creating gasoline vapours to atmosphere through a whistle alarm as required.

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