Profile: Dreher & Assocs., Inc. is a provider of industrial equipments and services. Our product line includes cooling towers, closed-circuit coolers, evaporative condensers, centrifugal separators, sand filters, variable frequency drives, frame heat exchangers, plate heat exchangers and degreasers. Our sweeper piping installed in our cooling tower allows a separate filtration loop, keeping solids in suspension, directed to pump suction and removed.