7 Machines and apparatus for conveying and pumping purposes, and installations and equipment consisting thereof, namely, pumps for machines; pumps being parts of machines, engines and motors, namely, fuel pumps and water pumps; machine components for treatment of liquid fuels, namely, filters for removing impurities from liquids and gasses, separators for removing unwanted liquids from gases and gases from liquids and separating liquids, magnetic filters for removing magnetic particles from liquids, filter materials retained in filters for filtering materials, filter funnels, strainers for removing impurities from liquids, nail extractors, pile extractors, condensers for condensing of liquids from gases, droplet separators for removing droplets from gases, absorbers for removing impurities from liquids, fluid separators, phase separators and de-oilers being parts for machines, motors and engines; fuel filters and fuel and water separators for fueling vehicles and airplanes; filter presses, namely, industrial machine presses; centrifugal machines; fuel filters for fueling vehicles and airplanes, combined with a pressure measuring and indicating device connected to the filter; heat exchangers being parts of machines; fuel pumps for service stations and fueling installations consisting of fuel pumps for service stations; refueling installations, mainly consisting of fuel pumps for service stations, as well as gauges and sensors for checking fuel levels in fuel tanks, for fuel vapor recovery and for leak diagnosis in fuel tanks; self-regulating fuel pumps for use in land vehicles and land vehicle engines, as well as for use in service stations