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  • #31
    Re: Vent Tee installed upside down

    I had actually told Rick I was trying to stay out of this thread. All DWV must be installed in the direction of flow. We all know why that is true for the drain and waste but for those who do not know why that is true for vents it is so the the air can leave the system and the condensation can roll back down inside the system. A vent fitting does not have an upside down position as it is square. The fitting in the picture is not a vent tee it is a San-tee installed upside down. I believe true vent tees are only available today in plastic and Durham fittings.

    Mark
    "Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony

    I never lost a cent on the jobs I didn't get!

    Comment


    • #32
      Re: Vent Tee installed upside down

      Originally posted by ToUtahNow View Post
      I had actually told Rick I was trying to stay out of this thread. All DWV must be installed in the direction of flow. We all know why that is true for the drain and waste but for those who do not know why that is true for vents it is so the the air can leave the system and the condensation can roll back down inside the system. A vent fitting does not have an upside down position as it is square. The fitting in the picture is not a vent tee it is a San-tee installed upside down. I believe true vent tees are only available today in plastic and Durham fittings.

      Mark
      and that is that Mark has spoken
      Charlie

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      • #33
        Re: Vent Tee installed upside down

        Thats' all fine an good .But WHAT'S A VENT? 6 more to go !
        I can build anything You want , if you draw a picture of it , on the back of a big enough check .

        Comment


        • #34
          Re: Vent Tee installed upside down

          Originally posted by toolaholic View Post
          Thats' all fine an good .But WHAT'S A VENT? 6 more to go !
          make that 5 and then put it to sleep

          rick.
          phoebe it is

          Comment


          • #35
            Re: Vent Tee installed upside down

            Remembering the code says that the condensate must drain. It does not matter if it drains back tward the fixture served or tward the stack it connect to. Therefore the orientation of the tee sames no difference as the condensate will drain back either way. Again as far as air is concerned, it does not care about direction of flow either on whether or not there is restriction.
            sigpic

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            • #36
              Re: Vent Tee installed upside down

              I believe the IPC says back to the drainage pipe (singular) as opposed to the drainage pipes and or drainage system. However, the UPC does in fact state "to the drainage pipe it serves".

              Mark
              "Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony

              I never lost a cent on the jobs I didn't get!

              Comment


              • #37
                Re: Vent Tee installed upside down

                The slope of a vent pipe does
                not affect the movement of air inside the pipe. It makes
                no difference if the vent piping is sloped to drain back to
                the drain piping served by the vent or if the vent piping
                slopes to drain to a vent stack or stack vent, provided
                that water will not stand in any portion of the venting
                system (see Figure 905.2).
                sigpic

                Comment


                • #38
                  Re: Vent Tee installed upside down

                  Originally posted by NHMaster3015 View Post
                  The slope of a vent pipe does
                  not affect the movement of air inside the pipe. It makes
                  no difference if the vent piping is sloped to drain back to
                  the drain piping served by the vent or if the vent piping
                  slopes to drain to a vent stack or stack vent, provided
                  that water will not stand in any portion of the venting
                  system (see Figure 905.2).
                  I am assuming you mean Section 905.2 of the IPC.

                  Section 905.2: Grade. All vent and branch vent pipe shall be so graded and connected as to drain back to the drainage pipe by gravity.

                  We may have to agree to disagree on this one.

                  Mark
                  "Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony

                  I never lost a cent on the jobs I didn't get!

                  Comment


                  • #39
                    Re: Vent Tee installed upside down

                    No, not disagreement at all. Just pointing out one of the many stupid things that pop up in the IPC.

                    I think that's why the exam is open book
                    sigpic

                    Comment


                    • #40
                      Re: Vent Tee installed upside down

                      This always gets me.
                      2003 IPC
                      section 904.4 Prohibited use. Vent terminals shall not be used as a flag pole or to support flag poles, television aerials or similar items, except when the piping has been anchored in an approved manner.

                      Comment


                      • #41
                        Re: Vent Tee installed upside down

                        Originally posted by nhmaster3015 View Post
                        no, not disagreement at all. Just pointing out one of the many stupid things that pop up in the ipc.

                        i think that's why the exam is open book:d
                        What!?!?!!

                        Comment


                        • #42
                          Re: Vent Tee installed upside down

                          Thank you for all the information.

                          Toolaholic, sorry to disappoint you by starting this thread. I have a good amount of respect for most of plumbers on this forum. Feel free to start your own thread.

                          Many times in plumbing I have found what one plumber holds true is nothing more than a old wives tale. Trying to break this barrier is often difficult as many plumbers know what they know, because they know what they know.

                          The reason I posted this thread was to learn something about venting and tee's and to settle the debate with my boss. However it seems we are both right.

                          The picture I posted is from a book I bought at Home Depot last week. It has some good information in it and some that is just plain wrong.
                          Anyone can tear a man down, few can build one up.

                          Comment


                          • #43
                            Re: Vent Tee installed upside down

                            Originally posted by Tyman View Post
                            The picture I posted is from a book I bought at Home Depot last week. It has some good information in it and some that is just plain wrong.
                            Good ole Rex Cauldwell. If you want to see the defecation hit the oscillation rotor, post or ask about his under sink drainage system.
                            Buy cheap, buy twice.

                            Comment


                            • #44
                              Re: Vent Tee installed upside down

                              Originally posted by stokefire7 View Post
                              This always gets me.
                              2003 IPC
                              section 904.4 Prohibited use. Vent terminals shall not be used as a flag pole or to support flag poles, television aerials or similar items, except when the piping has been anchored in an approved manner.
                              What, you never saw a tv antenna strapped to a vent stack? Before cable we saw that on a regular basis.

                              Ducky, You didn't know NH gives the journeyman and masters test open book? And you all wonder why my bp's 185 over 130 I fight this stupidity weekly.
                              sigpic

                              Comment


                              • #45
                                Re: Vent Tee installed upside down

                                Originally posted by NHMaster3015 View Post
                                What, you never saw a tv antenna strapped to a vent stack? Before cable we saw that on a regular basis.

                                Ducky, You didn't know NH gives the journeyman and masters test open book? And you all wonder why my bp's 185 over 130 I fight this stupidity weekly.
                                Virginia is also open book. They don't bother to strap the atenna pole to the vent, they'll just place it inside the vent and after grinding the metal pole for 15 minutes, this will spring to their mind.
                                Buy cheap, buy twice.

                                Comment

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