What is a “gravity drain”?

A gravity drain is a drain system that relies on gravity to function without the need for pumps. This type of drainage system operates by allowing waste and water to flow downwards through pipes due to the force of gravity. Typically, gravity drains are installed with a slight slope to ensure that the flow of water is directed toward an appropriate discharge point, such as a sewer or a drainage field.

Using gravity as a means of movement is efficient and requires minimal maintenance compared to systems that rely on pumps, which can be prone to mechanical failures and require energy to operate. This makes gravity drain systems particularly popular in residential and commercial plumbing applications.

In contrast, systems that incorporate pumps are designed for scenarios where gravity alone cannot effectively move wastewater or stormwater. Therefore, the focus on a pump-free operation distinguishes a gravity drain as an essential and fundamental aspect of plumbing design.