PVC joining methods — Are common PVC pipe joints made by solvent-cemented or gasketed/threaded connections rather than by flared joints or soldered joints?

Introduction / Context:
Joining methods must match material properties. PVC is a thermoplastic that does not accept soldered (brazed) joints used for copper, and flared joints are associated with soft metals or certain tubing systems. Understanding the correct PVC joining methods is essential for accurate specifications and safe installations.

Given Data / Assumptions:

• The statement claims PVC joints are made with flared or solder joints.
• Typical PVC joining methods include solvent cementing, gasketed bell-and-spigot, and threaded connections (with appropriate fittings).
• Applications: pressure water lines, DWV (drain-waste-vent), and conduits.

Concept / Approach:
Solvent cementing chemically softens mating PVC surfaces so they fuse on assembly, creating a strong, continuous joint. Gasketed joints provide mechanical sealing for certain bell-end pipes. Threads are used with proper fittings and sealants where specified. Flared and soldered joints do not apply to PVC due to material behavior and code restrictions, so the statement is wrong.

Step-by-Step Solution:
1) Identify material: PVC thermoplastic.2) List compatible joining methods: solvent cement, gaskets, threads.3) Evaluate flared/soldered approaches: incompatible with PVC.4) Conclude the claim is incorrect.

Verification / Alternative check:
Manufacturer installation guides and building codes specify solvent welding or gasketed joints for PVC systems; soldering is expressly for metals like copper and brass.

Why Other Options Are Wrong:

• Correct: Incorrect because the described methods (flared/solder) do not suit PVC.
• CPVC/Schedule 80/pressure-only caveats: Proper PVC joining methods apply across schedules and many services, subject to temperature/pressure ratings.

Common Pitfalls:
Using the wrong cement or primer; assembling outside temperature limits; over-torquing threaded PVC; mixing incompatible fittings; assuming metal-joining practices carry over to plastics.

Final Answer:
Incorrect