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Title: Fundamental Principles Of Regulators
Author: Robert C. Lisk
Source: 1965 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1965
Abstract: To the problem of providing sufficient strength in regulator components to withstand the static pressures which may be imposed, there must be added the problems of mass and velocity. These factors introduce difficulties which are at times surprising and just as often puzzling. Natural gas, with its specific gravity of less than unity, does not ordinarily impress us with its weight. A cubic foot at standard conditions weighs only 5/100 of a pound. This we might be tempted to ignore. When we consider also the quantities, as well as the weights of the gas in a specific situation, we begin to realize that it would be a gross error to overlook the mass involved. Even a relatively small pressure reducing valve, such as a 1 house service regulator, can pass 1,000 cubic feet per hour and thus must be designed to handle a weight totaling 50 pounds each hour.

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