Essentials of Plumbing Lesson

IDENTIFYING FITTINGS AND USING JOINT CONNECTIONS FOR RIGID COPPER TUBING

This learning event illustrates fittings used for rigid copper tubing (DWV). This learning event also explains how to make a soldered joint connection on rigid copper.

Fittings

The illustration below shows fittings for rigid copper tubing (DWV).

IDENTIFYING FITTINGS AND USING JOINT CONNECTIONS FOR RIGID COPPER TUBING

Joint Connections

Joint connections for rigid copper tubing (DWV) are made with flux, solder, and a source of heat. The flux permits the even spreading of molten solder over the surfaces to be soldered. The molten solder flows into the space between the fitting and the tubing.

Steps for making the joint connection. Flux, 50-50 solder, and a torch are needed to make the joint. Use the following steps:

Apply flux to outside end of the tubing.
Apply flux to the inside end of a fitting.
Push the fitting onto the tubing, giving it a quarter turn to spread the flux evenly.
With the torch, apply heat to the fitting only until the flux begins to bubble.
Keeping the flame on the fitting, apply solder to the joint. Melt the solder around the joint. A well-soldered joint should have an even bead around the entire joint.
Remove the flame.
Clean the joint with a wet cool rag. Be careful not to burn your fingers.

Steps for making the joint connection.