Plumbing: Vents

Rosemary Thornton, contributing editor
Victorian charmerOne challenge in adding plumbing fixtures to an old house is figuring out how to properly vent them. This Sure-Vent Air Admittance Valve provides ventilation and allows the plumbing system to breathe, without permitting sewer gases to enter the living space.

It comes with a limited lifetime warranty and complies with international plumbing codes. Check with your locale first; not all municipalities allow this type of vent.

  • Oatey 20 DFU (Drainage Fixture Unit) Air Admittance Valve is around $30 (May 2006).
  • Dimensions: 1-1/2" PVC threads.

    Supplier: Oatey
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