What is the branch size for a pedestal urinal?

The correct branch size for a pedestal urinal is a 2" branch. This size is standard for the waste line connection of a urinal, allowing for adequate flow and drainage. A 2" diameter pipe is capable of handling the volume and velocity of water expected from a urinal, ensuring that waste products are moved effectively through the plumbing system.

Choosing a larger size, such as a 3" or 4" branch, is unnecessary for a urinal. While these sizes may be used in certain plumbing applications with higher flow requirements, they are not practical or standard for a typical pedestal urinal. Conversely, using a smaller size, such as a 1 1/2" branch, might lead to drainage issues, as it may not provide adequate capacity for the waste flow from the urinal.

Overall, adhering to the 2" branch size ensures a proper and efficient plumbing installation for a pedestal urinal in compliance with plumbing codes and standards.