How to Repair Brass Pipes


Repairing and connecting brass pipe requires soldering skill. Understanding how the metal and soldering material react when heated and fused in a necessity. Know the correct type of solder to use on each type of brass pipe. Do-it-yourselfers can acquire basic soldering skill by practicing on spare bits and pieces.

Things You'll Need

  • Emery cloth
  • Dry cloth
  • Flux
  • Torch
  • Solder
  • Wet cloth
  • Clean the brass pipe with emery cloth.

  • Wipe the brass dust off with a clean, dry cloth.

  • Coat the damaged area of the pipe with flux. Flux is an acid-based compound that, when heated, removes all contaminants from the pipe's surface.

  • Heat the pipe joint with a propane torch. Move the torch over the pipe in a back-and-forth motion until it is hot.

  • Touch the solder material to the pipe. If it instantly begins to melt, the pipe is hot enough to continue with the repair. If not, continue heating and testing until it is.

  • Remove the torch and melt the solder over the entire surface of the repair.

  • Wipe off any excess solder with a dry cloth. Let the repair cool to room temperature.

  • Wash the acid flux residue from the repair with a damp cloth.

  • Test the repair with air or water depending on what the pipe is used for.

Tips & Warnings

  • Use a flux brush when applying the flux paste.
  • The torch tip, solder and pipe are extremely hot.

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  • Photo Credit welding project image by leemarusa from
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