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Replacing a Leaky Valve

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DIFFICULTY RATING: (3 out of 5 - Moderate)

A corroded shutoff valve can start to leak. Consider replacing the valve to save water and prevent water damage.
Step 4: Measure the new pieces to fit.
Temporarily slide a small length of copper pipe to a new gate valve. Slide the new valve into the end of the existing pipe. Hold the other end of the new pipe up against the other existing pipe. Notice where they meet. Mark a location on the new pipe 1/8" back from the end of the existing pipe. This will leave room for the coupler.
Notice where the new length of pipe and the existing pipe meet.

Step 4 of 11 (View Full Step by Step)


Bucket (Buy) Copper pipe (Buy)
Coupling (Buy) Emery paper (Buy)
Flame-proof cloth (Buy) Flux (Buy)
Flux brush (Buy) Gate valve (Buy)
Pipe cutter, circular (Buy) Propane torch (Buy)
Solder (Buy)
Use only lead-free solder on copper pipes. Be sure to follow directions when using a propane torch. If you are unsure of any step, hire a professional plumber.

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