MTcummins
In the Trades
quote; They did this b/c of the tight space in there, but this makes the trap much deeper,
Actually the trap is only SLIGHTly deeper and it has absolutely NO EFFECT on the draining, (in fact, it is almost exactly the same as when manufacturers supply a standard street ell instead of the short pattern one). Even a "retired plumber" should know that it is NOT "the wrong fitting", but the right one used in reverse, which is often done when necessary because of conditions.. The WRONG part about the drain is that they did NOT install a cleanout fitting above the drain's tee. Whoever did the work really "incinerated'' the pipes and studs in the area, which implies it was NOT done by a professional plumber.
Not doubting you HJ, just trying to learn. Is this actually acceptable to do a trap like this by code? I've seen it a few times(in tubs most times, to get around some other pipe or something), and usually those drains have been fairly slow draining. They drained, but much more slowly than I like to see. Seemed like they needed more gravity pressure than normal from the water level in the tub to be able to force the water out.
I know that you're only adding about an inch to the height there, but that seems pretty significant to me. I'm no expert in fluid dynamics or whatever would dictate this, but it seems to me like there would be much greater resistance to flow with a trap that tall. Is this incorrect?