Is solvent-cementing allowed between ABS and PVC?

Solvent-cementing between ABS (Acrylonitrile Butadiene Styrene) and PVC (Polyvinyl Chloride) is not permitted under standard plumbing practices. This is due to the differing chemical compositions and properties of these two types of plastic. Solvent cement works by chemically melting the edges of the materials to be joined, creating a strong bond. However, ABS and PVC do not have compatible bonding characteristics, which can lead to weak joints and potential failures in the plumbing system.

The uniform plumbing code generally specifies that appropriate adhesives or connection methods must be used. In instances where both ABS and PVC pipes are present in a system, proper transition fittings or adapters specifically designed for this purpose should be utilized. Using incompatible methods like solvent cement can compromise the integrity of the plumbing installation and create a risk of leaks or other plumbing failures. Ensuring compliance with local building codes and plumbing standards is essential for the safety and functionality of any plumbing system.