7 [ Machines and apparatus for conveying and pumping purposes, and installations and equipment consisting thereof, namely, conveyors, pumps for machines; pumps as parts of machines, engines or motors; filters, separators, magnetic filters, filter bodies, filter funnels, strainers, extractors, condensers, droplet separators, adsorbers, fluid separators, phase separators and de-oilers being parts for machines, motors and engines; fuel filters and separators for fueling vehicles and airplanes; filter presses, namely, industrial machine presses; machines, namely, centrifuges; fuel filters for fueling vehicles and airplanes, combined with a pressure measuring and/or indicating devices connected to the filter; heat exchangers being parts of machines ]