Plumbing Basics: How Well Do You Know Pipes, Fixtures, and More?
What shape is typically seen in the pipe used for a P-trap under a sink?
Correct Incorrect A P-trap uses a U-shaped design to hold water and create a seal that blocks sewer gases from entering the home. This design is standard in plumbing systems, particularly for kitchen and bathroom sinks, and also allows for the easy retrieval of objects that fall down the drain.