Spray system pump wash sequence

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United States of America Patent

PATENT NO 9901945
SERIAL NO

14904655

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Abstract

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A method for a system having a plurality of primary fluid sources and a fluid output with a common pump includes halting pumping of a first fluid, isolating the common pump from the fluid output and the primary fluid sources, connecting an inlet of the common pump to a solvent source and an outlet of the common pump to a waste fluid dump, actuating the common pump first in a pumping mode, then in a recirculation mode, and then in a flush mode, connecting an inlet of the common pump to a second primary fluid source, and an outlet of the common pump to the output line, and starting pumping mode pumping of a second fluid from the second primary fluid source through the output line.

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Patent Owner(s)

Patent OwnerAddress
GRACO MINNESOTA INC88TH 11TH AVENUE NE MINNEAPOLIS MN 55413

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fehr, David L Champlin, US 8 8
Van, Keulen Dennis J Rogers, US 10 18

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