Clearing Epoxy Pipe Blockage The Safe & Smart Way

Best Practices for Clearing Epoxy Pipes

The best way to clear a blockage in an epoxy-lined sewer pipe is to use methods that avoid damaging the liner while effectively removing the obstruction. Here are the recommended approaches:

🚿 1. Hydro Jetting (Preferred Method)

✔ Why: Epoxy-lined pipes should not be cleared using mechanical augers or cable machines, as they can damage the liner. Hydro jetting is the safest and most effective method.
🔹 Process:
✅ Use a low-pressure jetter (typically under 2500 PSI) to prevent damage to the liner.
✅ A rotating or pulse jet nozzle can help remove soft blockages and debris buildup without excessive force.
✅ Jetting should be done from a cleanout to ensure thorough cleaning of the pipe.

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🧪 2. Enzymatic or Biological Drain Cleaners (Preventative Maintenance)

✔ Why: Chemical drain cleaners are too harsh for epoxy liners and can degrade them over time. Instead, use enzyme-based drain cleaners to break down organic material safely.
🔹 Process:
✅ Regular use of enzyme-based solutions can help prevent buildup.
✅ These cleaners break down grease, food waste, and organic matter without damaging the epoxy coating.

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📹 3. Camera Inspection Before and After Clearing

✔ Why: It’s important to inspect the pipe with a sewer camera to:
📌 Locate the blockage precisely.
📌 Ensure there is no structural damage after clearing.
🔹 Process:
✅ Insert a high-resolution sewer camera before jetting.
✅ Inspect again after jetting to confirm the blockage is gone and the liner remains intact.

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🚫 4. Avoiding Mechanical Snakes or Augers

✔ Why: Traditional cable machines, augers, and chain knockers can tear or peel the epoxy liner, leading to expensive repairs.
🔹 Alternative:
✅ If a mechanical method is needed, use a soft-tip flex shaft designed for delicate pipe interiors.

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🔧 5. Manual Removal (For Certain Obstructions)

✔ Why: If the blockage is caused by a large foreign object (e.g., rags, plastic, or non-flushable items), jetting may not be enough.
🔹 Process:
✅ Locate the blockage with a camera.
✅ If possible, access the line from a cleanout or an open pipe segment to remove the object manually with a retrieval tool.

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🛑 6. Preventative Measures

✔ Regular Jetting: Implement a maintenance schedule to hydro jet the line periodically.
✔ Educating Users: In facilities like jails, hospitals, or commercial properties, educating users on proper waste disposal helps reduce blockages.
✔ Installing Proper Drain Covers: Prevents foreign objects from entering the system.

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🏆 Final Recommendation

If you’re dealing with a persistent blockage in an epoxy-lined pipe, the safest approach is:

🔍 Camera inspect the line to determine the exact cause.
💦 Use hydro jetting with a proper nozzle and controlled pressure.
🦠 Follow up with enzyme treatments to maintain the system.
🛠 Manually remove any non-flushable objects if necessary.