Which joining method is typically used with PVC mains?

Which joining method is typically used with PVC mains?

• A. PVC mains are joined by solvent welds only.
• B. PVC mains are joined by soldering.
• C. PVC mains are joined by solvent welds or threaded connections.
• D. PVC mains cannot be joined.

Answer: (C)

PVC mains are joined by solvent welding, which chemically fuses the pipe and fittings for a strong, leak-tight bond. In practice, threaded connections are also used in certain situations—such as when a reversible joint or an adapter to a threaded component is needed—so the combination of solvent welds or threaded connections covers the common methods. Soldering isn’t used with PVC because heat and the solvent-cement process are incompatible with plastic, and saying PVC mains cannot be joined is simply incorrect.

PVC mains are joined by solvent welding, which chemically fuses the pipe and fittings for a strong, leak-tight bond. In practice, threaded connections are also used in certain situations—such as when a reversible joint or an adapter to a threaded component is needed—so the combination of solvent welds or threaded connections covers the common methods. Soldering isn’t used with PVC because heat and the solvent-cement process are incompatible with plastic, and saying PVC mains cannot be joined is simply incorrect.