If newly soldered copper joints leak when full water pressure is re-applied to the copper line, they will have to be removed. This is a fairly simple process, but one should always replace an old joint with a new one. Special care must be followed when using a naked flame.
Things You'll Need
- Propane torch
- Heat-resistant cloth
- Water spray bottle
- Dry rag
- Emery cloth
- Water-pump pliers
Turn off water at main shut-off valve, and drain pipes by turning on the highest and lowest faucets in the property.
Place heat-resistant cloth behind the soldered joint to prevent possible fire. Light the propane torch, holding the flame tip against the copper fitting until the solder starts to melt.
Grip the copper fitting with the water-pump pliers, moving the fitting before it releases from the copper piping.
Re-heat the ends of the copper pipe to remove the old solder, and carefully wipe away any solder with a dry rag.
Sand the ends of the copper pipe(about an inch) with an emery cloth, making sure no dust or grease is left. The copper pipe is now ready to re-solder a new joint.
Tips & Warnings
- Always have a water spray bottle on hand, in case a fire starts.
- Never re-use the old copper fitting such as a coupling or elbow joint. Do not squeeze copper fitting too tightly as it may damage the copper piping. Be careful not to burn yourself using a dry rag when wiping away solder from copper pipes.
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