Patent ID: 9399571
Filing Date: 2016-07-26
CPC Classification: B23P,B65D,B67D,F17D,Y10T

Claim Text:
1. A method for retrofitting an overflow valve assembly in a below-ground transfer pump sump used in the dispensing of liquid fuels comprising: providing a sump in communication with a liquid fuel storage tank and a riser assembly extending between the sump and the storage tank, the riser assembly comprising a conduit having a cylindrical side wall; providing an overflow assembly comprising: generating an opening in the sidewall of the riser assembly; placing the overflow outlet of the overflow assembly adjacent the opening of the riser assembly; securing the mounting plate to the riser assembly with the at least one clamp; permitting water from the ground adjacent the sump to enter the sump and mix with any liquid fuel in the sump; and if the liquid fuel and water mixture in the sump reaches a predetermined level, allowing the liquid mixture to pass through the overflow assembly, into the conduit and into the storage tank containing the liquid fuel.