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Unclog Drain with Bladder — Attach Bladder to Hose

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How to Use a Drain Cleaning Bladder (Blow Bag) to Clear a Clog · Step 2 of 6

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In this video

Securely attach a plumber's drain bladder to the end of a garden hose. Insert the bladder as far as possible into the downstream cleanout pipe (the one closer to the street). Have an assistant turn on the water at the spigot. The bladder will inflate to seal the pipe and then discharge high-pressure water to push and clear the blockage.

Goal: Drain Unclogging (Standard)

  • Hold the garden hose firmly to prevent the bladder from being forced out of the pipe by the water pressure.
  • Communicate clearly with your assistant to turn the water on and off promptly.

Used in this video

  • Plumber's Drain Bladder (Tool Type: Drain cleaner, Material: Rubber, Size: Medium)To create a seal and direct a high-pressure stream of water to clear a clog.
  • Garden Hose (Length: Long, Material: Rubber)To supply water to the drain bladder.
  • Gloves (Material: Rubber, Gloves Material: Rubber)To protect hands from contact with sewage.
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FAQs

Can I use a drain cleaning bladder on all types of plumbing pipes?

No, drain bladders are generally safe for most sturdy household pipes but should be avoided with old, brittle, or cracked pipes, which could burst under pressure. Do not use if chemical drain cleaners have recently been used, as mixing chemicals and pressurized water can be dangerous.

How do I determine the correct size drain cleaning bladder for my specific pipe?

Drain cleaning bladders are designed for specific pipe diameters (e.g., 1.5-inch, 3-inch). You'll need to know the approximate diameter of the drain pipe you're clearing. Check the bladder's packaging to ensure it matches your pipe size for optimal sealing and effectiveness.

What water pressure should I use, and how can I prevent pipe damage?

Start with low water pressure and gradually increase it, listening for any unusual sounds. The bladder works by sealing and then forcing water through; excessive pressure can damage older or weaker pipes. Never exceed your home's standard water pressure, and release pressure if water backs up too quickly.

The bladder isn't clearing the clog; what are my next steps?

If the clog persists after several attempts, the obstruction might be too severe or a type the bladder can't clear, like a solid object or root intrusion. You may need to try an alternative method, such as a drain snake, or consider calling a professional plumber.

Transcript
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I moved to the second clean out and removed the clean out cap on that one as well and also noticed that there was standing water in that. So we used a garden hose and a plumbers blider to go down the drain and turn on the water to expand the blider to block it from the line. Also, I lowered the clean out and installed a sewer relief valve that will automatically open if there's everything back up again.

Auto-generated transcript. May contain errors.