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  1. Dougster

    Clearance between direct vent intake and DWV vent?

    Killer95Stang I follow your reasoning but am not sure the building department or a flow engineer would agree since my question is combustion air intake contamination from an uncoupled exhaust source.
  2. Dougster

    Clearance between direct vent intake and DWV vent?

    Is there a minimum lateral separation on a roof between a combustion intake air vent and a DWV stack vent? I am also concerned about the exhaust from a cooking stove which also terminates nearby. According to Inspectapedia there are "critical concerns with combustion air contamination for...
  3. Dougster

    Insinkerator Instant Hot, Contour Installation Tips, plumbinghacks

    Has anyone thought of, or tried, installing an anti-scale cartridge (e.g. Aqua-Pure AP430SS) under the kitchen sink in the cold water feed line just in front of the "Instant Hot" unit's tank, and if so would it extend the life these "Instant Hot" units? Might be considered overkill but at the...
  4. Dougster

    Vespin II and Toto parts

    Terry, what make and model bathtub is that in your photo? It looks like a nice acrylic tub. Thanks
  5. Dougster

    Ok to change this sanitary tee to a long sweep combo?

    Backup into the tub/shower is exactly what happens. Last instance was April'14 and we were running either the laundry or the kitchen sink when the clog again attained critical mass. I agree that weekly use of the laundry probably helps flush the line and the san tee - thus extending the...
  6. Dougster

    Ok to change this sanitary tee to a long sweep combo?

    Ok, so there’s no point to replace that san tee with a long sweep combo. I will still have a plumber replace the 2” galvanized lateral drain pipes which are all in the crawlspace. These service the KS, LT and tub / shower. Is the best plan to simply cut the GI pipes just after each of the...
  7. Dougster

    Ok to change this sanitary tee to a long sweep combo?

    ask tom : The horizontal lines will be replaced up to the combos below the upstream fixtures, at least. Whether to keep the sanitary tee style connection might still be an open question since in one instance after snaking the line at the kitchen, the clog was only cleared after snaking down...
  8. Dougster

    Ok to change this sanitary tee to a long sweep combo?

    Three drains (kitchen, laundry and tub/shower) block in unison every couple of years and the clog has always been cleared at the downstream sanitary tee shown below. It has been suggested I replace this abrupt fitting by a long sweep combo. This seems to make sense because I can’t see any need...
  9. Dougster

    Low flush toilets come to roost?

    There are already threads here on this topic such as "Low flush toilets causing sewage pipe clogs???" but here’s an interesting recent (2015) MSc thesis from Kansas State U suggesting further study may be needed...
  10. Dougster

    Ok to cut my CI closet bend riser above the closet bend hub?

    Re. PVC transition option (Terry): When cutting the vertical cast iron riser (above the hub), could a Sawzall give me the cleanest and safest cut? Based on my photos, will a wire brush and emory paper make the surface of the cast iron stub smooth enough for a banded rubber coupling? Re. Cast...
  11. Dougster

    Ok to cut my CI closet bend riser above the closet bend hub?

    This project started with a toilet flange wax gasket leak into the floor. For my replacement floor I want to raise my toilet flange to the proper height, and bolt it to the floor. I also want to switch the current 4” cast iron flange to 4” PVC for future serviceability. (I prefer to avoid...
  12. Dougster

    Help identify mystery tub drain shoe sealant/gasket

    Given I want to keep the old steel tub, my original plan was to replace the old tub drain shoe & overflow assembly with rubber gaskets and plastic tubes. This was because the bigger project replaces the nearby galvanized drain lines with ABS, including the trap. However given the rust on the...
  13. Dougster

    Help identify mystery tub drain shoe sealant/gasket

    Like Watco, the Geberit kit is plastic and rubber. My question is, can the old tub shoe sealant (see photo) be cleaned off underneath well enough, or would the scraping and residue prevent me from getting a good seal if I attempt to retrofit the old steel tub with a new Watco or Geberit drain...
  14. Dougster

    Help identify mystery tub drain shoe sealant/gasket

    My 58 y.o. tract home has the usual enameled steel bathtub. I hope to replace the tub drain with a Geberit kit. The new rubber drain shoe gasket needs a stable, clean, smooth surface under the tub. The photo is the old drain shoe. The light colored sealant from decades ago is hard to the...
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