Air Dimensions Incorporated is 100% U.S.A. owned and operated. ADI has over 60 years of experience in engineering and manufacturing high precision gaseous diaphragm sampling pumps and compressors. All of our rugged Dia-Vac® diaphragm pumps offer 100% oil free, leak free and contamination free sampling. Superior quality, one-on-one customer service, advanced engineering and the fastest delivery in the business allow ADI to be the industry leader in diaphragm pump technology.  Sales worldwide with average shipments in 1 week or less!