7 Mechanical spraying, rinsing and cleaning apparatus and installations being parts specially adapted for steam cleaning; steam cleaning machines and steam jetting cleaning apparatus; Electric brush sweepers; combined mechanical washing and brushing machines for industrial purposes; hard surface and hard floor cleaning machines using high pressure water; Sweepers, namely, electric sweepers; Parts specially adapted for the aforesaid goods, in particular brushes, hoses, hand spray guns and spray nozzles being parts of machines; street cleaning machines in the nature of street sweeping machines; water jet nozzles being parts of machines; nozzle holders being parts of machines; High-pressure hoses being parts of machines and being plastic with metal reinforcing inserts, in particular with wire mesh for mechanical spraying devices and spraying installations; Valves being parts of machines; Electrically drivable installations and devices for atomizing, spraying or nebulizing gases and liquids; Machine parts consisting of electrically operated pumps, nozzles, nozzle changing devices and with manually reversible or interchangeable nozzle holders and nozzle holders, nozzle sets and holders of plastic; Electrically operated hand tools, namely, paint application devices consisting of paint spraying guns and paint spraying devices