Leadership

LOSS OF HEAD IN CORPORATION COCKS.

Issue 25 and Volume 63.

LOSS OF HEAD IN CORPORATION COCKS. A series of interesting tests are described in an article printed in another column, by Bernard J. Bleistein, of the New York City Department of Water Supply, Gas and Electricity, being extracts from the paper read by him before the Chicago convention of the American Water Works Association. The tests were inaugurated to determine the losses of head in corporation or service cocks and service pipes, and the observations were very carefully made, according to Mr. Bleistein, the losses being measured by mercury deflections, and the discharges by a two-inch meter of the current type. That type was selected rather than a meter of the disc type, as the flow through the latter caused considerably more vibration and fluctuations of the mercury deflections than a meter of the current type. The same meter was used during the entire series. It was rated on a…

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