HINDUSTAN DORR-OLIVER LIMITED An Insight into Our Vibrant History. Dorr-Oliver began their journey as two individual entities at the threshold of the 20th century in USA. Dr. Dorr who began in the gold fields in North Dakota and Mr. Oliver was working in the gold fields of California. FL- Dorr-Oliver - Flo-systems Dorr-Oliver® ODS® Air-Operated Diaphragm Pumps last two to three times longer than their competitors. Heavy Duty and Multi-Purpose. Its sturdy construction guarantees it will pump sludges and scum that no other unit can handle and will efficiently transfer anything that moves through a pipe. Federal Register :: Dorr-Oliver Eimco USA, Inc. Formerly ... New information shows that Dorr-Oliver Eimco USA, Inc., formerly known as Eimco Process Equipment Company, was formed following a merger in November 2002 between GL&V/Dorr-Oliver and Eimco Process Equipment Company, a Division of Baker Hughes, Incorporated.    Read More