7 machines and installations comprised thereof for processing liquids, solids and gases for general industrial use, namely, [ centrifuges, ] clarifiers, classifiers, cyclones, decanters, dewatering machines, diffusers, [ extraction towers, ] rotary vacuum drum filtering machines, disc filtering machines, pressure belt drum filtering machines, horizontal belt filtering machines, rigid belt filtering machines and pressure filtering machines, flocculators, flotation machines, hydrocyclones, liquid separating machines, mixers, centrifugal pumps and diaphragm pumps, all pumps being for general industrial use including mixing, reacting, homogenizing, dispersing, disintegrating and macerating, repulpers, screening machines, sieve bends, settlers, slakers, mechanized mixing tanks, thickeners, and wash machines