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Jan 18 at 13:27 comment added Jimmy Fix-it Tubular products used for waste, such as tailpieces, tubular P-traps, and other slip-joint fittings are specifically different in the way they are sized compared to PVC piping. They are not compatible at all as it applies to glue connection. Tube is sized by actual O.D. (e.g. 1 1/2", 1 1/4") whereas pipe is sized by nominal I.D. The only thing that is the same between the two product types is the thread that is used. The statement that "PVC sizes are PVC sizes, no matter the pipe's purpose..." is incorrect; unfortunately it is not that simple.
Jan 17 at 22:29 comment added Fresh Codemonger you can use furnco connectors. just solvent in some male pieces to the 1.25 pvc ball valve and then furnco on both ends of the cut poly. to remove just use 1 furnco to reconnect
Jan 17 at 22:25 comment added Tim To at least partly answer my question in my last comment, some googling suggests there's something that's called a "Marvel Adapter" that would work. I see some bundled with p-traps.
Jan 17 at 22:08 comment added Tim Do you mean something like this? homedepot.com/p/… How would you connect it though? If I compare that to a p-trap that looks like mine, let's say this one homedepot.com/p/… it looks like threads are different (inside vs outside), and it's made of polypropylene so I'm guessing the normal PVC solvent welding is out of the question. I get the impression that these are designed to make it really hard to accidentally mix and match them.
Jan 17 at 19:47 history answered ickybus CC BY-SA 4.0