7 Vacuum pump machines; vacuum apparatus, namely, vacuum pumps, vacuum distillation equipment, vacuum valves as machine parts, vacuum separators as machine parts, cold traps as machine parts for vacuum application, filters for vacuum machines; vacuum installations, namely, combined vacuum pump machines and vacuum apparatus; parts of the above mentioned goods, namely, vacuum tubes, connectors, flanges, valves, slide valves, separators, condensation traps, filters; fittings and systems for central vacuum generation for a number of decentralized vacuum apparatus, namely, pumps, hoses, tubes, adapters, elbows, tee-fittings, nuts, mounting bases, nozzles, valves, flow-control modules, shut-off modules, manifolds, gauges, and sensors; liquid suction machines and devices for collecting liquids, namely, vacuum liquid aspiration pumps, vacuum collection bottles for liquids, and suction handsets