How To Solder Copper Pipes
Time Required: Over 1 day
Copper pipe has been used for plumbing for a long time because of its many great qualities, including durability, flexibility, resistance to bacteria and ease of installation. Copper pipe is also environmentally friendly since it can be recycled. This guide will show you how to solder copper pipes to ensure there are no leaks in or around your home.
Please note: The instructions here are specific to copper pipe soldering, which differs from the welding copper process.
- Apply a thin layer of lead-free soldering paste (flux) to the end of the pipe using a flux brush. The paste should cover about 1 inch of pipe.
- Insert the pipe into the fitting, making sure it is tight against the bottom of the fitting.
- Twist the fitting slightly to spread the flux.
- Light the propane torch.
- Hold the tip of the flame against the middle of the fitting for 4 to 5 seconds or until the soldering paste begins to sizzle.
- Heat the opposite side of the fitting to ensure the heat is evenly distributed.
- Wipe away the excess solder with a rag.
- After the pipe and fitting have cooled, install the pipe, turn on the water and check for leaks.
- If the joint leaks, take it apart and re-solder it.