Diaphragm pumps operate by reducing the volume within the pumping chamber with a flexible membrane driven by a crank. Thomas vacuum pumps and compressors are used in pharmaceutical and medical equipment, automobiles, business machines, environmental systems, and food processing equipment all over the world. Although their customers come from a variety of industries with varying applications, all share a common goal — a solution that enhances the performance of their product or application while still delivering the best value.