What is the minimum size required for an outlet opening to an oil separator?

The minimum size required for an outlet opening to an oil separator is determined by industry standards, which aim to ensure proper function and maintenance access. An 18-inch outlet opening is commonly specified because it allows for adequate flow while also enabling proper servicing of the separator. This size helps prevent blockages and ensures that the separator can efficiently separate oils and solids from the wastewater.

Larger openings could be used in some cases, but the 18-inch specification is typically seen as a balance between functionality and cost-effectiveness. It allows for the appropriate management of the materials within the separator, while still meeting health and safety regulations. It's important to conform to these standards in plumbing to ensure system efficiency and compliance with local codes.