What is the recommended branch size for a chemical sink?

The recommended branch size for a chemical sink is 1 1/2 inches. This size is suitable for handling the type of waste typically generated by chemical sinks, which can include various substances that require proper drainage without risking clogs or backflow.

By utilizing a 1 1/2-inch branch, the plumbing system ensures adequate flow rates, which helps to keep waste moving and prevents the accumulation of potentially hazardous materials. The size is also compatible with the standard fixtures and connections used in chemical waste systems, ensuring safe and effective operation.

Larger sizes, such as 2 inches or 3 inches, may be unnecessary for most applications involving chemical sinks, potentially leading to increased costs and complications in installation without providing substantial benefits. A 4-inch branch is typically reserved for more extensive plumbing needs, such as main sewer lines, and would be overly large for a chemical sink specifically.