Results 1 to 7 of 7
  1. #1
    Jerome W. Young's Avatar
    Jerome W. Young Guest

    Default mechanical vents

    Jerry,
    Is this the vent you referred to as not proper for a single family home. I believe you stated it was for mobile home use? I found another one today at an island sink.

    Similar Threads:
    ***IMPORTANT*** You Need To Register To View Images ***IMPORTANT*** You Need To Register To View Images
    OREP Home Inspector E&O Insurance 2

  2. #2
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,317

    Default Re: mechanical vents

    .Yes.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  3. #3
    Join Date
    Mar 2007
    Location
    Santa Rosa, CA
    Posts
    2,286

    Default Re: mechanical vents

    So... you removed it? Cool.

    That is indeed the offending device. Wish I could think of a better name than "mechanical vent".

    Department of Redundancy Department
    http://www.FullCircleInspect.com/

  4. #4
    Jerome W. Young's Avatar
    Jerome W. Young Guest

    Default Re: mechanical vents

    owner couldnt get under to see what i was talking about, so i offered to show him the device. this one came right off.


  5. #5
    Join Date
    Mar 2007
    Location
    Kalamazoo, MI
    Posts
    117

    Cool Re: mechanical vents

    It's called an 'air addmittance valve' and they are commonly used in kitchen islands (since you can't run a vent stack up). They are acceptable (in new construction) up here in SW lower MI and I suppose if they fail they would be easy to replace. P.S. Yes, you will find them in mobile homes alot.

    RJDalga
    http://homeanalysts.com
    Kalamazoo, MI

  6. #6
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    25,317

    Default Re: mechanical vents

    Quote Originally Posted by Robert Dalga View Post
    It's called an 'air addmittance valve' and they are commonly used in kitchen islands (since you can't run a vent stack up). They are acceptable (in new construction) up here in SW lower MI and I suppose if they fail they would be easy to replace. P.S. Yes, you will find them in mobile homes alot.
    Robert,

    You are mixing two things up:
    1) Air admittance valves
    2) Mechanical vents

    The white ones (by Studor and Oatey) are air admittance valves. The black ones on mechanical vents and are only approved for use in mobile homes.

    See that spring in the first photo Jerome posted? That makes it a mechanical vent, which is not allowed in regular homes.

    Jerome, yes, they should be able to be removed, and they should also have pipe thread tape around the threads to seal it in place when screwed in.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

  7. #7
    Scott Faris's Avatar
    Scott Faris Guest

    Default Re: mechanical vents

    Jerry is right. What you have is a mechanical vent sometimes called a "cheater vent". They are allowed in manufactured homes and rated only for 1-2 Drainage Fixture Units (so really just for a sink). They are not allowed on any stick built construction. Air Admittance Valves Ayrlett, Oatey, and Studor are allowed in various states according to their codes.

    Scott


Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •