Hot water supply and return piping layout originating from a water heater with a three-quarter-inch hot water return line and various branch sizes. Main supply lines scale from one inch down to three-quarters of an inch. Individual fixture drops connect using half-inch hot water lines supplying lavatories, kitchen sinks, and mop sinks.
MS-1 L-1 L-1 L-1 L-1 L-1 L-1 KS-1 WATER HEATER 3/4" HW 1/2" HW 1/2" HW 1/2" HW 1/2" HW 1/2" HW 1/2" HW 1/2" HW 1" HW 1" HW 3/4" HWR 3/4" HWR 1/2" HW 1/2" HW
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