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Sure-Vent 3 in. x 4 in. PVC Air Admittance Valve with 500 DFU Branch

$38.50
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  • Air admittance valve design can hold up to pressure changes
  • Heavy-duty PVC frame is resilient, lightweight, and non-toxic
  • AAV vent prevents sewer gases from escaping into a building
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Product Details

For a secondary vent, look to this Sure-Vent PVC Air Admittance Valve. It withstands pressure changes and blocks sewer gases from entering a building. Built to last, it features a non-toxic, sturdy, lightweight PVC frame.
  • Complies to ASSE standard 1050 and 1051
  • For use as a secondary vent
  • 1 size approved to handle up to 4 in. vent pipe
  • Opens and closes as needed by building's plumbing system
  • IAPMO Listed
  • Closes through gravity
  • Return Policy

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

5Questions
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Q:My Oatey Sure Vent was giving off sewer gas so I've removed it and ordered a replacement. Howeve...
by|Mar 7, 2020
1 Answer
Answer This Question

A:  Duct tape would suffice.

by|Mar 9, 2020
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    Q:I currently have a 160 DFU sure vent on a basement evacuation pump chamber. When I flush the toil...
    by|Sep 9, 2018
    1 Answer
    Answer This Question

    A:  The use of AAVs on an ejector pump application must first be approved by the manufacture of the pump and the building officials within your jurisdiction. If approved by both entities, you must have the drain and vent sized and installed in a very specific configuration. The bathroom group or singular fixture draining into the pit must also be vented properly. The issue that you are describing is related to a venting issue that is common in incorrect venting methods. We would recommend that you reach out to your pump manufacture for details on how to size and install your drain and vent. The reason why the drain flows well when the AAV is removed is related to the release of positive pressure from the system. When an AAV is exposed to positive pressures, it remains closed and water flow is restricted.

    by|Nov 12, 2022
      1 found this answer helpful
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      Q:what does 500 dfu mean?
      by|Mar 2, 2018
      1 Answer
      Answer This Question

      A:  DFU - stands for drainage fixture unit. This is a measure of probable fluid discharge into the drainage system by various types of plumbing fixtures. Each fixture's DFU value depends on the volume of fluid discharge per cycle and an average time between cycles. Examples of DFU calculations can be found on our website www.oatey.com in the FAQ section located at the bottom of the home page. Always check with local building officials to confirm these calculations match theirs. The 500 DFU is the size of fixture load that the AAV can vent properly.

      by|Dec 28, 2018
        2 found this answer helpful
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        Q:how do i adapt this to 1 1/4 pvc in a manufactured home
        by|Jan 15, 2017
        2 Answers
        Answer This Question

        A:  This unit comes with a 3 inch screw on adaptor. you will need probably several adapters to bring it down to 11/4, but it should work fine. I've also used a 2" unit that works fine when I installed it on my washing machine drain.

        by|May 3, 2018

        A:  You will not want to use a 500 dfu in a manufactured home. The recommended part is an Inline vent #39012. 500 DFU is something you would see in a commercial building.

        by|Jan 19, 2017
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          Customer Reviews

          4.6 out of 5
          (17)
          • 4.6
            out of 17 reviews
          • 100%recommend this product
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          Stopped our stinky smell....
          Stopped our stinky smell.
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              Just as advertised. Product worked very well.
              Just as advertised. Product worked very well.
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              • Recommended
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              Rating provided by a verified purchaser
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              Exactly as needed , eliminated drain issue from poor venting...
              Exactly as needed , eliminated drain issue from poor venting
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              1 found this review helpful
              5 Star Review
              Rating provided by a verified purchaser
              by
              • Verified Purchase
              This item is high quality pvc material. It connects with blue glue like regular irritations pipe ...
              This item is high quality pvc material. It connects with blue glue like regular irritations pipe but it self seals as well. Works fine for venting sewer pipes and septic systems. It has multiple uses. I used one as a yard decoration in a flower bed. Easy to paint. Used another one to vent a large pipe I stuck in a compost pile. Keeps rain out of the pipe so air can get in the pile. I know it sounds weird. Could also be used to vent diy greenhouses or cold frames.
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              Showing 1-10 of 17 reviews

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              ConnectionScrew onSolventSolventSolvent
              MaterialPVCPVCPVCPVC
              Compatible Pipe MaterialPVCPVCPVCPVC
              Maximum Pressure (psi)05 psi5 PSI5 PSI
              Valve TypeAir AdmittanceBackflow PreventionBackflow PreventionBackflow Prevention
              ApplicationRough-In valveNon-Potable WaterNon-Potable WaterNon-Potable Water
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