Weird bathtub trap

9326yssh

First time I see a trap like this,

is it just a trap or was it doing something else for the size that it is it should to more 😏

mattmia2

It is a drum trap in tubular brass.

Usually that means it is wet vented for an extended length or is arranged like an s trap where it goes down rater than directly in to a vented vertical section.

hot_rod

some hybrid version drum / ptrap? It would be interesting to see to see the inside

Drum traps were common pre 1950s. Clog prone, hard to service.

P traps tend to scour clean, I think drum traps have been banned for years in the codes

9326yssh

Yes interesting it wasn't replaced yet, but why would you make a trap so big what was the purpose

was that the prototype for the traps we have

Mad Dog_2

That's look like what Manny called a Bell Trap...illegal...has interior partitions. If it didn't clog up or leak...no reason to replace it..Mad Dog

GW

nice one, never seen that, been at it for 40 years

mattmia2

https://forum.heatinghelp.com/discussion/comment/1859927#Comment_1859927

holds more water so it is less likely to get syphoned dry from questionable venting arrangements

ChrisJ

According to NJ plumbing code, that looks like a partition trap. Kind of. But not really.