Vacuum pumps are 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 vacuum pumps 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 the pumps our customers choose are the right vacuum pumps for their individual needs.