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Restore Water and Adjust Flow — Restore Water and Test the Repair

Beginner3 hours

Part of project

How to Repair a Leaking Copper Pipe with a Compression Coupling · Step 7 of 7

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In this video

Slowly turn the water shut-off valve back on. Carefully inspect all the connections for any leaks. Once confirmed there are no leaks, use the provided Allen wrench to adjust the flow rate screw on the side of the trap primer. Open the valve by turning counter-clockwise until you see a steady stream, then turn it clockwise to reduce the flow to a slow, steady drip. The goal is one drip every 6-10 seconds.

Goal: Turn on the water and set the correct drip rate

  • Adjusting the drip rate can be sensitive. It may take several small adjustments to get it just right. The goal is to keep the trap full without wasting excessive water.

Used in this video

  • Allen Wrench — To adjust the flow rate of the trap primer.
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FAQs

How difficult is this repair for a beginner, and what if it takes longer than 3 hours?

This repair is rated beginner because it avoids complex techniques like soldering. While the estimated time is 3 hours, allow extra time for locating the leak, gathering tools, and ensuring the pipe system is fully drained. Rushing can lead to mistakes, so prioritize careful, precise work over speed.

Do I really need all the specific tools listed, or can I use substitutes for this project?

While tools like a dedicated tubing cutter and reamer are highly recommended for achieving clean, burr-free pipe ends crucial for a leak-proof seal, some items like permanent markers or measuring tape can be substituted with similar household tools. An adjustable wrench is essential, so ensure you have one that fits the coupling nuts securely.

What's the most common mistake beginners make with compression fittings, and how can I avoid a new leak?

The most common mistake is not properly preparing the pipe ends (cutting straight, deburring, and cleaning) or improperly tightening the compression nuts. Ensure pipe ends are perfectly smooth and burr-free, and tighten the nuts until snug, then give an additional 1/2 to 3/4 turn. Avoid over-tightening, which can deform the ferrule or strip threads, or under-tightening, which causes leaks.

What are the most important safety precautions I should take when repairing a leaking copper pipe?

Always shut off the main water supply and drain the pipes completely before starting to prevent water damage and potential electrical hazards. Wear safety glasses to protect your eyes from debris, especially when cutting or deburring the pipe. Be mindful of sharp edges on cut pipes.

Transcript
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on. Let that valve out there. So, no leaks, nothing's leaking, so it seems good. Now, the structure says to just the, just a valve for the water flow. So, it says, you know, turn it clock, what's that? Turn it, turn it to the left, anti-clockwise, until steady flow water comes out. And you've got to basically look through that hole so you can see the water running through. So, once you see that water running through that steady stream, you want to back off of it, so you want to turn it clockwise and basically shut it down until a little drip comes out. So, you want it to have a small drip, maybe like once every six to ten seconds or so on like that. It was kind of hard to stop it at that right moment, not hard, not difficult level, but just to get it to stop perfectly or it's going to steady drip. I've do it too much and this just turns off. So, I had to do it a few times, had to open and close it until I got it to where a small drip came out. So, it took a few times, but that's pretty much it. So once you've got your drip going, it's primed. Again, check for leaks. That's pretty much it. So, that should keep my

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