Texas Tradesman Plumber-Limited License Practice Exam

Joining PVC pipes properly is essential for creating a watertight seal and ensuring the integrity of the plumbing system. Using PVC cement and primer is the correct method because PVC cement chemically bonds the pipes together, providing a strong and durable connection.

The process begins with applying primer to the ends of the pipes and fittings to clean and prepare the surfaces for bonding. This step ensures that the cement adheres properly and creates a reliable seal. Once the primer is applied, PVC cement is used to coat the same surfaces and then the pipes are pushed together firmly. This action allows the cement to seep into the joint and create a fused bond as it dries.

Utilizing duct tape, while sometimes effective for temporary fixes, does not provide a permanent or watertight joint. It fails to ensure the structural integrity necessary for plumbing systems. Similarly, welding is not applicable to PVC pipes, as they are made from a thermoplastic material that cannot be welded in the traditional sense. Lastly, using screws and bolts is not suitable for joining PVC pipes, as this method does not create the same chemical bond and can lead to leaks or structural failure in the system.