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Title: Large Capacity Regulators
Author: . A. Pommersheim
Source: 1966 Appalachian Gas Measurement Short Course
Year Published: 1966
Abstract: There are many types of Regulators that can be classified as large capacity. Also, the classification can be further defined as high or low pressure. A definite distinction as to type is sometimes hard to make however, in the transmission or main line application. Regulator equipment can in most cases be classified as large capacity, high pressure. It is these Regulators and Iheir application which will be the basis of this discussion. The main line Regulator can and does assume many modes. The various designs incorporate a valve or throttling means along with a suitable control mechanism. Each of the pressure control means where properly applied, will provide adequate service. The type chosen is dependent on the application and the accuracy of control desired. In most cases, simplicity is foremost in Regulator selection. Many times elaborate equipment has only served to upset the system, rather than provide necessary accuracy. Yet, on the other hand, where equipment can be properly applied and results warrant its selection, sophistication can be justified. Regulator design for the main line application is not restricted, although the most common design is the double ported balanced valve. The Balanced Valve Regulator has been quite successful, and probably will continue to be the favorite for many years. New approaches to Regulator design, particularly for the high pressure applications, include many variations. Outstanding among these are the single port piston balanced valve, the expansible throttling valve, and the plug valve Regulator. Each design has operating characteristics which will provide adequate performance for the chosen application

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