Is solvent-cementing between ABS and PVC pipe allowed?

Solvent-cementing between ABS (Acrylonitrile Butadiene Styrene) and PVC (Polyvinyl Chloride) pipe is prohibited because these two materials have different chemical properties and require different types of solvents for joining. ABS uses a specific type of solvent cement that dissolves the surface of ABS to form a bond, whereas PVC requires a different formulation. Attempting to use ABS solvent cement on PVC or vice versa would not create a reliable bond, threatening the integrity of the plumbing system.

Additionally, the building codes in many jurisdictions explicitly prohibit the joining of these two types of plastic pipe with solvent cement, thereby ensuring compliance with safety and performance standards. Proper joining methods typically involve using mechanical connections or specialized transition fittings designed for this purpose instead. Hence, the correct understanding in this context must recognize the incompatibility of these materials when it comes to solvent-based adhesives.