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I need to plumb into an existing ABS drain, labelled as "ABS/DWV 1 1/4" schedule 40 ", but for the life of me cant find any 1 1/4" fittings!!!

Photograph of pipe showing labelling

My suspicion is that the pipe is 1 1/4" ID, and I need to buy 1 1/2" OD fittings.

Before I trundle down to Home Depot, is anyone able to confirm my suspicion (or do I have the most useless, redundant piping ever?

Thanks!

  • You may need to trundle down to a plumbing supply place; it's probably an uncommon size. – Matthew Gauthier Apr 16 '18 at 2:33
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They definitely exist (in Canada at least).

Sample "big box" listing for "abs 1 1/4" :

https://www.rona.ca/webapp/wcs/stores/servlet/RonaAjaxCatalogSearchView?catalogId=10051&searchKey=RonaEN&urlLangId=-1&content=&langId=-1&keywords=abs+1%22+1%2F4&storeId=10151

  • I am sure that ABS DWV Schedule 40 is legal to use where I live, but it does not in fact appear to be used here in new construction. Every new installation I see now in the City of Dallas is PVC schedule 40. The drains in our 47-year-old Fox and Jacobs tract house in Dallas are plumbed in ABS, but I am not aware of any other ABS installations here. – Jim Stewart Apr 16 '18 at 10:04
  • Levi, where is this installation of ABS drains? – Jim Stewart Apr 16 '18 at 10:20
  • Thanks Jeff - I looked at HD & Lowes, but did not actually check Rona! – Levi Apr 16 '18 at 17:54
  • Jim - This install is in Ontario. – Levi Apr 16 '18 at 17:55

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