Encyclopedia

stop-and-waste cock

stop-and-waste cock

stop-and-waste cock
A stopcock having a drain in the valve, used in a water piping system; when the stopcock is turned so that the water supply is shut off, the drain in the valve opens, thereby draining off the water downstream from the stopcock to a waste.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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