What is the minimum trap size required for a bidet?

The minimum trap size required for a bidet is 1 1/2 inches. This size is specified in plumbing codes to ensure proper drainage and prevent any potential clogs that may arise from the wastewater produced by the bidet. Having a trap that is too small can result in inadequate flow and drainage, leading to overflow or backup.

A trap size of 1 1/2 inches is commonly used for most fixtures, including bidets, as it strikes a balance between being sufficiently large to handle the flow from the fixture while remaining compact enough for installation in typical residential plumbing configurations. This size effectively meets the requirements for the discharge from bidets, allowing for the necessary drainage without increasing installation complexity or cost.

Larger sizes, like 2 inches and above, are generally reserved for higher flow fixtures or systems that need additional capacity, but they are unnecessary for standard bidet installations. Therefore, the 1 1/2 inch minimum effectively serves its purpose for bidets in standard plumbing situations.