7 Brewing machines and mechanical brewing apparatus for the production of beer and alcoholic beverages, namely, mixing machines and filtration machines for making beverages, in particular for beer, wine and liquid foodstuff, beverage aeration machines, beverage processing machines, pumps for the beverage industry, pump control valves, and structural parts therefor, for the brewing, beverages and foodstuffs industry, industrial mixers for making beverages; sifters and sieves as machines or machine parts, for purifying malt and unmalted grain, and conveyor machines such as belt, chain and screw conveyors and elevators such as beaker elevators and blow or suction conveyors for transporting malt and unmalted grain, in particular with a facility for weighing and/or aspiration; rough grinding mills; grain conveyors and mechanical mixing machines for moving liquid media of differing consistencies in containers, in particular of mechanical design with a number of arms and with release and emptying devices or as pump stirring devices; Pumps, namely, centrifugal, positive displacement, membrane, hose and piston pumps, filters, namely, sieve, cloth, polymer membrane and ceramic membrane filters for the manufacture, treating, processing and refining of foodstuffs and luxury items and of beverages and fruit juices, in particular for purifying; separating machines for the production of beer, wine, alcoholic beverages, juices, soft drinks and liquid foodstuff; apparatus and requisites, namely gas injecting nozzles, aeration nozzles such as wort aeration devices for the beverages industry as a whole, namely, for processing and dosing gases, as far as required for making and bottling beverages and liquid foodstuff for beverages, wort and yeast, blenders and distributors, barrel, bottle, vessel and siphon cleaning machines and apparatus, bottle crate cleaning machines