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Title: Proper Sizing Of Domestic Regulators
Author: George C. Hughes
Source: 1962 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1962
Abstract: The definition of the word Proper Understood in the collect sense Special Adaptation Conforming to Standard. outlines the necessary procedure to size a service regulator. UNDERSTOOD IN THE CORRECT SENSE The fundamental principles of a domestic service regulator must be understood before selecting the right regulator in regard to diaphragm case size and orifice size. The single orifice in a domestic regulator tends to unbal ance the set conditions as the inlet pressure varies. The amount of unbalance is a direct ratio of the orifice area and the change of pressure in p.s.i./sq. in. The change in the inlet pressure force acting on the valve changes the outlet pressure setting. Therefore, the smaller the orifice area the less the outlet pressure change.

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