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Title: Domestic Meters
Author: A. P. Benson
Source: 1944 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1944
Abstract: Domestic Meters manufactured by our company are four compartment, two diaphragm meters. When one measuring compartment is being- tilled with gas, another measuring compartment is forcing its measured quantity of gas into the meter outlet. At no time in the cycle of operation cf the meter Is there a point at which gas is not being admitted to one measuring compartment, and being forced from another measuring compartment into the meter outlet. As a result of this, there is no dead spot in these meters, The most important thing in the operation of any displacement meter is its maintenance of proof. One of the most important points relative to a meter maintaining its proof aside froin correct design, proper material and construction, is the setting of its valves, When the tangent points toward the meter index and the short back flag arm is directly in Une with the tangent, the back diaphragm is at its innermost position, In this position, the back -valve cover should just be ready to or admitting gas to the back diaphragm compartment. The tangent is now turned 180. The tangent is now directly under the short back Hag arm and in line with same. In this position, the back valve cover should just be ready to or admitting gao tc the back case compartment. The distance frcm the edge of the valve cover to the edge of the bar of the valve seat in these two positions should be equal

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