Since 1985 The Gellert Company, Inc. has been a major supplier of: Compressed air equipment including Ingersoll-Rand air compressors and air dryers. Water, sewage and process pumps manufactured by Aurora, Hydromatic, GIW and Sundyne. Gas fired commercial water heaters made by Bock and Raypak. ASME tanks for hot water or compressed air storage. A large stock of commonly used equipment is ...