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How to Install a Drain Clean-out Plug

Drain clean-out plugs allow plumbers access to a drain with a snake or auger. The plugs are available in two basic styles: old and new. Old-style drain clean-out plugs are a solid piece with thread on one side. The new drain clean-out plugs consist of two plates with a rubber washer in between them and a wing nut that runs through the center of the plates.

Old-Style Drain Clean-out Plug

  1. Dry the area around the drain hole.

  2. Place two drops of pipe joint compound on the thread of the drain clean-out plug. Place one drop on one side of the plug and another drop on the opposite side of the plug.

  3. Put the clean-out plug over the hole. Use the wrench to twist the plug into place.

  4. Rub the towel around the outside of the plug to remove any excess compound.

  5. Let the plug stay in place for 10 to 12 hours before getting the plug wet. This gives the compound enough time to dry and set in place.

New-Style Drain Clean-out Plug

  1. Loosen the wing nut on the top of the drain clean-out plug.

  2. Slide the bottom plate sideways into the drain hole. Be sure the wing nut is on the top part of the drain.

  3. Turn the plate flat so that it presses up against the drain.

  4. Tighten the wing nut until the two plates press flat against the drain and the washer expands to fill the gap.

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