What is the minimum diameter required for the drain from a macerating toilet system?

The minimum diameter required for the drain from a macerating toilet system is 0.75 inches. This specification is critical because macerating toilets are designed to grind waste and discharge it through a smaller pipe than traditional gravity-based toilet systems. The 0.75-inch diameter is sufficient to accommodate the pumped waste and ensure proper flow without causing clogs, while also conforming to plumbing codes and standards.

The macerating system operates under pressure, allowing it to transport waste through a smaller diameter pipe, which can be advantageous for installations where conventional plumbing configurations are not feasible. If the diameter were smaller, there would be a higher risk of blockages and insufficient flow, especially given the nature of the materials being transported. This design choice balances space-saving needs with functionality and compliance with plumbing requirements.