VENT COWL

A Vent Hole (sometimes referred to as a Vent Howl) is a small opening in a pipe or fitting that allows for the release of trapped air or gases in a plumbing or drainage system. It helps maintain proper airflow and pressure balance within the pipeline, preventing issues such as vacuum formation, waterlogging, or drainage inefficiencies.

Description of Vent Hole:

Material:

Typically made from PVC, CPVC, uPVC, cast iron, or stainless steel, depending on the application.

Shape & Design:

A small, precisely placed hole in a pipe or fitting.

Can be part of vent pipes, traps, or drainage fittings.

Function:

Allows air circulation in plumbing systems to prevent pressure buildup.

Reduces waterlogging and enhances wastewater flow.

Prevents siphoning and vacuum effects in drainage lines.

Installation & Placement:

Found in plumbing vent pipes, drain traps, and sewer systems.

Installed at high points of drainage networks to allow air release.