United Vacuum http://www.unitedvacuum.com... Specializes in the manufacturing and re manufacturing of industrial rotary piston pumps and rotary lobe blowers. Whether you require a new or re manufactured pump, United Vacuum is positioned to accommodate your needs. Our many years of experience within the vacuum industry is available to you if you have process related pump questions or are looking to upgrade an existing system. Our large inventory of pumps and boosters enables us to offer fast, cost effective solutions to line down situations.