With a history that goes back to 1775, the P-trap is an essential fixture in modern plumbing, especially after improvements by the legendary Thomas Crapper in the late 1800s. You’ll find this curvy ...

Detect an awful odor coming from your sink? All plumbing fixtures in the home are connected to the same waste system. Sewer gases are prevented from backing up into the house by p-traps. A p-trap, the ...

Some bathroom and kitchen sinks have “S” traps like this one that drain into the floor. It’s important that sewer gas doesn’t get trapped in them. Proper venting of drain lines ensures that a small ...