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Proper way to do a smoke test for D.W.V.

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  • Proper way to do a smoke test for D.W.V.

    Having trouble finding someone to do this. Can You help? thanks Tool
    I can build anything You want , if you draw a picture of it , on the back of a big enough check .

  • #2
    Re: Proper way to do a smoke test for D.W.V.

    Interesting!
    Never heard of a smoke test.
    I had to plug all openings and fill with water all the way to the top of the roof vents.
    I'd take an educated guess - but I'm unqualified.
    It ain't just soot, it's paydirt.
    "I swear, wherever Gift goes, argument follows." -Youtube comment

    Comment


    • #3
      Re: Proper way to do a smoke test for D.W.V.

      Big cigar and blow in the overflow in one of the toilets.

      J.C.

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      • #4
        Re: Proper way to do a smoke test for D.W.V.

        Originally posted by JCsPlumbing View Post
        Big cigar and blow in the overflow in one of the toilets. J.C.
        That is the standard Fartfan test.
        I'd take an educated guess - but I'm unqualified.
        It ain't just soot, it's paydirt.
        "I swear, wherever Gift goes, argument follows." -Youtube comment

        Comment


        • #5
          Re: Proper way to do a smoke test for D.W.V.

          Originally posted by Robert Gift View Post
          That is the standard Fartfan test.
          Was that you with the HairDryer? Did you get that madness going yet?

          J.C.

          Comment


          • #6
            Re: Proper way to do a smoke test for D.W.V.

            Originally posted by JCsPlumbing View Post
            Was that you with the HairDryer? Did you get that madness going yet? J.C.
            Thanks to PlumbeRick, my wife is afraid of a methanexplosion and hid it.
            Actually, I have not found the old hairdryer. With the vent holes I discovered in the Bemis toiletank cover, it should be even easier to connect a vacuum to it and try. I was planning to use a cigar in the bowl to see if any smoke was drawn into the rim holes.
            Last edited by Robert Gift; 05-26-2010, 11:27 PM.
            I'd take an educated guess - but I'm unqualified.
            It ain't just soot, it's paydirt.
            "I swear, wherever Gift goes, argument follows." -Youtube comment

            Comment


            • #7
              Re: Proper way to do a smoke test for D.W.V.

              Originally posted by toolaholic View Post
              Having trouble finding someone to do this. Can You help? thanks Tool
              We don`t smoke test our DWV drains we air test them as we carn`t aford to waste water go to this web site and have a look www.plumtest.com.au

              Tony

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              • #8
                Re: Proper way to do a smoke test for D.W.V.

                Originally posted by AFM View Post
                We don`t smoke test our DWV drains we air test them as we carn`t aford to waste water go to this web site and have a look www.plumtest.com.au Tony
                What pressure and how long?
                How long to pump up a typical DWV system to test pressure?
                Last edited by Robert Gift; 05-27-2010, 06:46 AM.
                I'd take an educated guess - but I'm unqualified.
                It ain't just soot, it's paydirt.
                "I swear, wherever Gift goes, argument follows." -Youtube comment

                Comment


                • #9
                  Re: Proper way to do a smoke test for D.W.V.

                  I have never done a smoke test, but local Wastewater districts will introduce smoke in nearby manholes if they suspect illegal sewer hookups in the area. They then just look for the buildings with smoke rising from the vents. Busted!

                  Comment


                  • #10
                    Re: Proper way to do a smoke test for D.W.V.

                    125 psi in Mass. 40 years ago , i remember. cold climates water test may freeze in winter!
                    I can build anything You want , if you draw a picture of it , on the back of a big enough check .

                    Comment


                    • #11
                      Re: Proper way to do a smoke test for D.W.V.

                      Are you doing this for an inspection or trying to track down a sewer odor?

                      Drop a smoke grenade down the roof stack and blow air in behind it with a leaf blower. Don't over blow it or you'll push smoke all the way into the main.

                      You can find cracked stacks, broken vents and dried up floor drains with this method. You'll also know how long it takes the fire department to arrive after your neighbors see smoke coming out of the attic

                      Comment


                      • #12
                        Re: Proper way to do a smoke test for D.W.V.

                        an air test for waste and vents require 5 psi pressure. great since you can actually test an entire building from the lower level all the way to the roof. water test typically is limited to 30' as the pressure will get up towards 15# at the base.

                        we are required a 5# test or 10' of head or to the top of the roof vent.

                        the air test is the most difficult to find leaks on and requires the most work to perform. a water test can get messy, yet it's a simple test and simple to find a leak.

                        done both ways and i prefer water on new work and air on occupied buildings that a blowout could get wet and messy.

                        rick.
                        phoebe it is

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                        • #13
                          Re: Proper way to do a smoke test for D.W.V.

                          Originally posted by toolaholic View Post
                          125 psi in Mass. 40 years ago , i remember. cold climates water test may freeze in winter!
                          125 psi seems much too high.
                          Was that before PVC and ABS?
                          Seems a blowout could be dangerous, especially with so much air and its compressibility.
                          Can't remember at what pressure I had to test my black pipe gas line.
                          Had to hold pressure on the gauge for 24 hours.
                          I'd take an educated guess - but I'm unqualified.
                          It ain't just soot, it's paydirt.
                          "I swear, wherever Gift goes, argument follows." -Youtube comment

                          Comment


                          • #14
                            Re: Proper way to do a smoke test for D.W.V.

                            Originally posted by toolaholic View Post
                            125 psi in Mass. 40 years ago , i remember. cold climates water test may freeze in winter!
                            125 psi 5 psi is what you would use on a MJ system. If it is plastic be careful if that s^*t blows up you could be hurt or possible death.

                            If you have access to someone in the HVAC biz they might be able to help with getting you the smoke bomb.
                            Last time I try to fix it myself. Next time I will hire a PROFESSIONAL.

                            Comment


                            • #15
                              Re: Proper way to do a smoke test for D.W.V.

                              Originally posted by Robert Gift View Post
                              125 psi seems much too high.
                              Was that before PVC and ABS?
                              Seems a blowout could be dangerous, especially with so much air and its compressibility.
                              Can't remember at what pressure I had to test my black pipe gas line.
                              Had to hold pressure on the gauge for 24 hours.
                              WOOPS !! That's water {copper ]
                              I can build anything You want , if you draw a picture of it , on the back of a big enough check .

                              Comment

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