11 FILTRATION EQUIPMENT, NAMELY, PARTICULATE AFTERFILTERS AND COALESCING FILTERS FOR COMPRESSED AIR AND GAS, INLET AIR FILTERS FOR COMPRESSED AIR SYSTEMS, AIR AND OIL SEPARATORS FOR USE IN COMPRESSORS, COMPRESSED AIR DRAIN VALVES, GAUGES, DESICCANTS; AND STRUCTURAL PARTS THEREFOR ALL SOLD AS A UNIT AND ALL FOR INDUSTRIAL USE