A copper pipe joint is created using several methods, primarily involving heat and a filler material to create a strong, leak-proof connection.
Common Methods for Joining Copper Pipes
The main methods for creating a copper pipe joint include:
- Soldering: This is a common method, especially in plumbing for water lines and sanitary drainage.
- Brazing: This method uses higher temperatures than soldering and creates a stronger joint.
- Electric Resistance: Utilizes electrical resistance to heat the joint for connection.
The reference material states: "These joining methods include soldering, brazing and electric resistance. Soldered joints, with capillary fittings, are used in plumbing for water lines and for sanitary drainage." This confirms the use of these methods for creating reliable copper pipe joints. Specifically, soldering with capillary fittings is noted for water lines and drainage systems.
Soldering Explained
Soldering relies on a lower melting point alloy (solder) to fuse the copper pipe and fitting together.
- Cleaning: The pipe and fitting are cleaned to ensure a good bond.
- Flux Application: Flux is applied to prevent oxidation during heating.
- Heating: The joint is heated with a torch.
- Solder Application: Solder is applied to the heated joint; it melts and is drawn into the joint by capillary action.
Brazing Explained
Brazing utilizes a higher melting point filler metal compared to soldering. This results in a stronger, more durable joint.
- Cleaning: Similar to soldering, cleaning is essential.
- Flux Application: A specific brazing flux is applied.
- Heating: The joint is heated to a higher temperature than soldering.
- Brazing Alloy Application: The brazing alloy is applied and melts into the joint.
Electric Resistance Joining Explained
Electric resistance joining heats the joint by running an electrical current through it. This is a less common method for typical plumbing applications but can be useful in specific industrial settings.
