BenjaminCoop
New Member
Well this morning I finally got through to the inspector to ask a couple final questions for my rough-in inspection. He surprised me by saying they no longer allow the 5 PSI pressure test for DWV. Now it's 10ft head of water, or -2 PSI vacuum test. The water test would be extremely complicated and would require me to add a test tee or cleanout further downstream in the old cast iron in my basement, as I have already tied in all the new basement bathroom DWV.
Anybody have experience with the vacuum test? The inspector said something about a shop vac, but now I am wondering how that would actually work. Maybe a check valve of some sort screwed onto one of my test plugs? Would this one from Menards work? I'd need some adapters for what I'm currently using, Sioux Chief Test Titan plugs, with male garden hose thread. I could duct tape my shop vac hose to the valve and see what kind of vacuum it can create. I suppose I'll change out my pressure gauge for a vacuum gauge, like this one from Grainger.
I can't even find much info on this kind of DWV test by googling it, so I'd appreciate any input.
Anybody have experience with the vacuum test? The inspector said something about a shop vac, but now I am wondering how that would actually work. Maybe a check valve of some sort screwed onto one of my test plugs? Would this one from Menards work? I'd need some adapters for what I'm currently using, Sioux Chief Test Titan plugs, with male garden hose thread. I could duct tape my shop vac hose to the valve and see what kind of vacuum it can create. I suppose I'll change out my pressure gauge for a vacuum gauge, like this one from Grainger.
I can't even find much info on this kind of DWV test by googling it, so I'd appreciate any input.