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Plumbing & Water Heaters
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Avg score: 76% Most missed: “Water heater installation instructions from the manufacturer”
Plumbing systems deliver clean water (supply) and remove waste, operating through pipes, valves, and drains. Water heaters, the core of hot water systems, use electric elements or gas burners to heat water, with storage tanks (requiring yearly flushing) or tankless units commonly used. Key maintenance includes testing the temperature-pressure relief valve and replacing the sacrificial anode rod to prevent corrosion.  Plumbing System Basics Supply System: Pipes, usually copper or plastic (PEX/PVC), under pressure bring fresh water to fixtures. Drain-Waste-Vent (DWV) System: Uses gravity to... Show more
Plumbing & Water Heaters
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1 Questions

1. The inlet male threads on a water heater drain valve must be what pipe size?