A vacuum pump is used in the production of many familiar items such as, incandescent light bulbs, freeze drying of life saving pharmaceuticals, production of high strength metal alloys and many other uses too numerous to mention here. The five factors in selecting a vacuum pump are: pressure, pumpdown, volume, gas load and manifold. All these must be analyzed because of the overlap that exists among various types of pumps. We want to ensure our customers choose the right vacuum pump for their individual needs.