How Do P-Traps Work? | Spec. Sense


How does a P-trap work? In this episode of Spec. Sense, Vance explains how a P-trap uses water to seal the drain and keep sewer gases from leaking into your home. You’ll also learn why airflow is important and why S-traps are no longer installed in homes. If your drain smells bad, then its possible that the trap seal is gone.

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