What size is typically required for a trap on floor drains installed with interceptors?

The typical size required for a trap on floor drains installed with interceptors is 2 inches. This size is standardized to effectively handle the flow of water and waste that such drains are designed to accommodate. A 2-inch trap provides sufficient capacity to prevent blockages while also managing the proper flow rate that is needed in conjunction with interceptors.

Floor drains often connect to larger drainage systems, and the 2-inch size ensures that the drain can maintain proper drainage without causing backup or overflow issues. Additionally, this size aligns with plumbing codes and standards, which dictate trap sizing based on the anticipated use and load. When installed correctly, a 2-inch trap prevents sewer gases from entering the building while allowing efficient drainage. Therefore, this specification is essential for maintaining hygiene and functionality in plumbing systems.