Sink traps

To prevent sewer gasses and odors from entering the house, drains are protected by traps. A trap is a curved section of drain pipe that fills up with water, providing a seal. Drains that penetrate a wall have a P trap and those that go through the floor have an S trap. The water held by the trap is replaced each time the fixture is used.

MORE ABOUT:
Water service // Water valves // Drain, waste, and vent plumbing // Water heaters
Kitchen plumbing // Kitchen sinks // Faucets
Bathroom plumbing // Bathroom sinks // Bathtubs and showers // Toilets

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