Hankison International - A worldwide leader in the design and manufacture of a complete line of compressed air treatment products. Refrigerated, desiccant and membrane air dryers with pressure dew points to -100F; Filters with solid particle filtration to .01 microns and oil aerosol and vapor filtration to .003 ppm w/w; Automatic condensate drains, electrical and mechanical with capacities to 24 gallons/hour.

Master Pneumatic-Detroit, Inc. - Filters, regulators and lubricators; Modular connections; Seven year warranty; Special product capabilities; Injection lubrication equipment; Safety lock-out devices; Sliencer/Reclassifiers; Coalescent filters; Auto drains.

Headline Filters, Inc. - Filters for Instrumentation, analysis, steam, vacuum pumps, and compressed air systems.

domnick hunter - Compressed air & gas filtration, purification & separation products. Refrigerated & desiccant air dryers, particulate & coalescing filters, oil/water separators, condensate drains & nitrogen gas generators.