Plumbing · P-GX6KN

Domestic Hot Water Recirculation Pump and Expansion Tank Piping Diagram

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This domestic hot water piping assembly incorporates a Bell and Gosset model PL-30B all-bronze circulating pump rated at 3.0 GPM, 10 feet of head, 0.08 horsepower, 115 volts, single phase, 60 hertz, 1.4 full load amps, and 2650 RPM. A Wessels model 5TX non-ASME rated thermal expansion tank with a 2.1-gallon tank volume and 2.1-gallon acceptance volume connects to the hot water line. The system includes a three-quarter-inch hot water aquastat, a thermometer, a calibrated balancing valve, a temperature and pressure relief valve piped to six inches above the floor, check valves, unions, shut-off valves, and cold water supply lines.

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