Which type of joint is commonly used to join PVC pipes?

The solvent weld joint is the correct choice for joining PVC pipes because it utilizes a chemical solvent to bond the pipe and fitting together. This process involves applying a special solvent cement that softens the surface of the PVC material, allowing the molecules to fuse when the two pieces are pushed together. The result is a strong, permanent bond that is resistant to leaks and can withstand the pressures typically associated with plumbing systems.

This method is favored for PVC piping due to its ease of use and effectiveness. Unlike other types of joints, the solvent weld joint does not require threading or additional mechanical fittings. It provides a smooth and streamlined connection, reducing the risk of clogs and enhancing the overall flow within the system. The simplicity of this technique also facilitates quicker installation, which is essential in both residential and commercial plumbing applications.

In contrast, threaded joints are typically used for metal pipes, solder joints are specific to copper piping, and compression joints are less common in applications involving PVC. Each of these alternatives has specific materials and methods associated with their use, further underscoring why solvent weld joints are the preferred choice for PVC.