What is the minimum waste pipe size for a type 1 interceptor?

The minimum waste pipe size for a type 1 interceptor is determined based on plumbing codes and standards that ensure adequate flow and prevent any potential system backups. For type 1 interceptors, which are typically used for grease management in commercial kitchens, a 4-inch waste pipe size is specified as the minimum to effectively handle the volume of wastewater generated and to accommodate the necessary flow rates.

Choosing a pipe of this diameter helps to maintain proper drainage and minimizes the risk of grease buildup, which can lead to plumbing issues. It also ensures that the interceptor operates efficiently, allowing for effective separation of fats, oils, and grease (FOG) from the wastewater stream.

Other sizes, while they may be used in certain applications, do not meet the minimum requirement for this specific type of interceptor, making the 4-inch size the correct choice for compliance with plumbing regulations.