vent pipe

American  

noun

Plumbing.

1. a pipe above a waste pipe or soil pipe that allows gas to escape from the system.

---

Etymology

Origin of vent pipe

First recorded in 1855–60

Example Sentences

I didn’t understand how that vent pipe worked at the time, but after a few trips to the local library, I discovered why the pipe was a vital part of the system.

From Seattle Times • Feb. 13, 2023

The vent pipe in your roof allows the air to enter the system to replace the air being pushed through the pipes by the drain water.

From Seattle Times • Feb. 13, 2023

If the smells persist once all the P-traps are clean, free-flowing and filled with water, there could be a plug in the vent pipe system that carries sewer gases up to the roof.

From Washington Post • Nov. 4, 2022

I’ve been using a superb plumbing vent pipe flashing for years that outperforms the cheaper flashing most roofers and plumbers commonly use.

From Washington Post • Jul. 19, 2022

He’d built the frame from long beams, the roof and walls from decking, the chimney from a vent pipe off a lost steamer, one window from a porthole.

From "Beyond the Bright Sea" by Lauren Wolk