How to Leak Test a Copper Supply Pipe

Leak test a copper supply pipe with minimal effort.

Many modern plumbing systems consist of copper pipes. Copper is durable and usually does not rust. However, it can become compromised and you may need to solder it to repair a leak. Whether the repair is at a connection or in the middle of the pipe, you must test the repair before restoring it to full service with confidence. You can leak test a copper supply pipe that has been repaired with minimal effort and materials.

Things You'll Need

• Rag

Instructions

1. Wipe the repaired area of the copper supply pipe with a dry rag. Dry the pipe completely so you can ensure that any wetness is indeed a leak.

2. Turn the handle or knob on the shutoff valve that supplies the pipe with water a quarter-turn counterclockwise. This will mitigate the flow of water in case there is a leak. It will also prevent a surge of pressure from damaging the repair.

3. Inspect the supply pipe and ensure it is not leaking with the reduced water flow. Open the shutoff valve another quarter-turn and check the supply pipe again. Proceed in this manner until the full flow of water has been restored.

4. Check the supply pipe several times in the next 24 hours to ensure that the repair is holding.