Established in 1932, Roy E. Hanson Jr. Mfg. is one of the leading manufacturers of carbon and stainless steel pressure vessels in the United States. Based in Los Angeles, Calif., the company specializes in manufacturing custom/standard air receivers and water-storage tanks. It also provides accumulators, blowdown tanks, expansion tanks, filter tanks, heat exchangers, hot-water generators, hydropneumatic tanks, scrubbers and separators. Its list of clients includes Boeing, Chevron, Coors, Disney, Dow Chemical, Ford, NASA, Nike and Universal Studios.