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Title: New Developments In High And Low Pressure Regulators
Author: John H. Liechty
Source: 1967 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1967
Abstract: Prior to the late 1950s, nearly all high capacity, high pressure regulators, whether direct operated, pilot operated or instrument operated, utilized the conventional single or double ported globe style body. Yet, even today, the combination of a pressure controller and diaphragm control valve is considered the standard by many gas companies. However, in recent years, capacity requirements have greatly increased as a result of the continuous expansion and penetration of natural gas into the energy market. In order to meet these increased demands, transmission and distribution companies have been forced to go to higher and higher system pressures and, today, it is not unusual to find town border stations reducing 1000 p.s.i. or higher pipeline pressures to 50 to 500 p.s.i. belt or trunk line pressures. With pressure drops of this magnitude and with the need for ever greater capacities, the state of the art of regulator design had to be advanced.

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