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Deburr, Clean, and Glue Adapters — Install the Sanitary Tee

Beginner

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How to Install an Air Admittance Valve (AAV) · Step 4 of 7

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In this video

For a strong, leak-proof connection, proper pipe preparation is crucial. Use a deburring tool to smooth the inside edge of each cut CPVC pipe. Lightly sand the outer surface of the pipe ends where the fittings will attach. Wipe the pipes clean with a rag. Apply a layer of CPVC cement to the outside of the pipe end and the inside of the transition fitting's slip connection. Push the fitting onto the pipe with a quarter turn to spread the cement and hold firmly for a few seconds. Wipe away excess cement. Repeat this for all three pipes.

Goal: Prepare the cut ends of the CPVC pipes and securely glue the new transition adapters on.

  • Work quickly once the cement is applied, as it sets fast. A quarter-turn helps ensure even distribution of the cement.
  • CPVC cement fumes are strong. Ensure the area is well-ventilated.

Used in this video

  • Deburring Tool (Tool Type: Deburring Tool Type, Power Source: Manual) · optional — Smoothing the inside edge of the cut CPVC pipes to ensure good flow and prevent damage to fittings.
  • Sandpaper (Supply Type: Sandpaper) · optional — Cleaning and slightly roughing the outside of the CPVC pipe for better cement adhesion.
  • Rag (Supply Type: Cleaning supplies) · optional — Wiping the pipe ends clean before gluing and wiping off excess cement.
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FAQs

What are the most important safety precautions I should take when installing an AAV?

Always wear appropriate personal protective equipment, including safety glasses and gloves, especially when cutting PVC pipe and handling chemical solvents. Ensure the work area is well-ventilated when using PVC primer and cement to avoid inhaling fumes. Have a bucket ready to catch any residual water from the drain line.

Do I really need all those specific pipe cutters and deburring tools for this project, or can I use a simpler tool?

While a hacksaw can cut PVC, specialized pipe cutters (like the ratcheting PVC cutter or plastic tubing cutter) provide much cleaner, straighter cuts with less effort, which is crucial for a tight seal. A deburring tool is also highly recommended to smooth edges, preventing snags and ensuring the best bond with primer and cement.

How long does a typical AAV installation take for a beginner, and what's the estimated cost of materials?

For a beginner, this project typically takes 1 to 3 hours, depending on preparation and experience with plumbing. The material costs, including the AAV, PVC fittings, primer, and cement, usually range from $30-$60, assuming you already have basic tools like a tape measure and bucket.

Where is the ideal location to install an AAV on a sink drain line for optimal performance and code compliance?

The AAV must be installed vertically, at least 4 inches above the horizontal drainpipe it serves, and critically, above the fixture's flood level rim. This prevents water from entering the valve and ensures proper air intake, while complying with most plumbing codes.

Transcript
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Step 7. Take a deburring tool and debur the inside edge of each pipe. Use some sandpaper and clean the edges of the pipe where the fitting will be glued. Step 8. Use matte medium, yellow, all-weather, one-step CPC cement and glue the fittings to the pipe. As you can see, I'm not a pro and I put way too much on my first one. But don't worry, just take a rag and wipe a little bit off to make it look cleaner. Glue all the fittings.

Auto-generated transcript. May contain errors.