Marco UP/P Series Gear Pumps, Marco UP3/P UP6/P UP10/P UP14/P Pumps. Marco self-priming electric pump for the transfer of liquids of varied nature. The pumping elements are made up of bronze gears which can possibly even run dry for brief periods. Equipped with in-line filter on the inlet side. Applications include the transfer of water, bilge water discharge and the transfer of antifreeze.