Which type of urinal does not have an integral trap?

The type of urinal that does not have an integral trap is the floor set urinal. These urinals are typically installed directly on the floor and are designed to be connected to the plumbing system via a separate trap installed below the floor. This allows for easier maintenance and cleaning since the trap can be accessed independently of the urinal itself.

In contrast, other types of urinals, such as blow-out, pedestal, and wall-mounted, typically feature an integral trap as part of their design. These integral traps help to prevent foul odors from escaping into the restroom and maintain effective drainage by allowing waste to flow through the trap, where it is then carried away through the drainage system. The inclusion of an integral trap simplifies the design and installation of these urinals, as they can function as a self-contained unit.