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Title: A P P L I C A T I O N And Operation Of Ball Valve Regulators
Author: Roy J. Becker
Source: 1983 International School of Hydrocarbon Measurement
Year Published: 1983
Abstract: OVER TWENTY YEARS AGO A PLUG VALVE WAS EQUIPPED WITH A PNEUMATIC CYLINDER AND A POSITIONER AND USED AS A MONITOR REGULATOR. THE CONCEPT WAS A NEW METHOD OF GAS REGULATION AND WAS THE BEGINNING OF A NEW ERA.