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Title: New Developments In High And Low Pressure Regulators
Author: John Liechty
Source: 1968 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1968
Abstract: Accurate metering of widely varying flows is still one of the basic problems confronting the gas industry. We are all probably aware of a number of different schemes to solve this problem, but each one has its limitations which have resulted in, at best, mild acceptance. The old standard, flow controllers and automated shutoff valves, requires rather elaborate and expensive equipment, and the instrument type controllers require atmospheric bleed. Another method of meter run switching utilizes a number of regulators and relief valves, but associated with this system is ths cost and complexity of the equipment, not to mention the fact that the downstream pressure has to change to effect the switch-over.

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