P-trap

The most common of these traps in houses is referred to as a P-trap.

The outlet of a P-trap or bottle trap is angled slightly downwards to allow for this.

How about the one about the P-trap that blew up when plumbers tossed it into a trash can?

A plumber may have to install an extra-long tailpiece from the bottom of the sink to connect to the P-trap under the fixture.

Alternately if moving sink to an island sink, install the P-trap below the floor of the island and vent off the top of the drain.

Nowadays, the U-bend type of trap is known as a P-trap and is invariably made from plastic, as are all the components of a modern waste system.

Waste is cleared out from this pool of water by being swept over into the trap (usually either a P-trap or an S-trap) and then beyond into a sewer by water from the flush.