Types of Plumbing Traps Used in Residential Construction

What type of trap is no longer used in residential construction?

The S-trap is no longer used in residential construction due to safety concerns related to sewer gas entry and siphoning of the trap seal.

Answer:

The S-trap is no longer used in residential construction.

When it comes to plumbing traps used in residential construction, it is important to understand the different types and their purposes. One type of trap that is no longer utilized in residential construction is the S-trap. The S-trap design was found to have safety concerns related to sewer gas entry and siphoning of the trap seal.

The S-trap has been replaced by the more reliable P-trap. The P-trap helps prevent sewer gases from entering the home by maintaining a constant water seal. This design improvement over the S-trap has made it the preferred choice in modern residential plumbing installations.

Modern plumbing codes typically prohibit the use of S-traps due to these safety concerns. The transition from S-traps to P-traps in residential construction has been a significant improvement in ensuring the safety and efficiency of plumbing systems in homes.