When joining PVC piping, what type of adhesive should be used?

Using purple primer and uncolored solvent cement when joining PVC piping is essential for ensuring a secure and long-lasting bond. The purple primer serves an important function; it cleans and softens the PVC material, allowing for better penetration of the solvent cement. This primer is specifically formulated for PVC and helps to prepare the surfaces for adhesion.

The uncolored solvent cement then provides a strong bond without affecting the aesthetic of the piping system, making it ideal for applications where the appearance of the joint is a consideration. This combination is commonly recommended in plumbing standards for its effectiveness and reliability in various types of installations, ensuring that the pipe remains watertight and durable under pressure.

This choice not only adheres to best practices in plumbing but is also recognized in many plumbing codes, enhancing its credibility and safety in applications involving PVC piping.