What is the maximum vertical distance from a kitchen sink drain outlet to the crown weir of its trap?

The maximum vertical distance from a kitchen sink drain outlet to the crown weir of its trap is established to ensure proper drainage and prevent issues such as siphoning. The crown weir is the point in the trap through which wastewater flows, and maintaining a specific vertical distance is crucial for effective trapping and drainage.

Allowing for a maximum distance of 2 feet ensures that the water sitting in the trap creates an adequate seal while still allowing the necessary flow of wastewater. If this distance were greater, it might lead to improper drainage, increased chances of drain line clogs, or the possibility of sewer gases leaking back into the kitchen.

Understanding the relationship between trap design and plumbing codes is also important. Codes often dictate maximum heights to prevent issues of improper drainage and to maintain sanitary conditions. Therefore, the specified maximum of 2 feet reflects industry standards for the safe and efficient functioning of kitchen sink drains.