>> Any other pumps that will do the job without
>> positioning the drum horizontally?

We often used standard, cheap (~$100) 1" brass gear pumps, available at most
hardware stores and geared down with pullies to 180 RPM or so, with no
problem.

They are self-priming over reasonable distances if the suction hose is
airtight and the pump is in good condition.

allen
A Beekeeper's Diary: http://www.honeybeeworld.com/diary/

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