Long-Sweep Confusion

[Skidude108]

I know that when transitioning from vertical to horizontal a long-sweep 90 is required, but when I try to buy long-sweep 90s at the plumbing supply house two different houses told me they don't carry long-sweeps and sold me this as the correct fitting.

Is that a 4in long-sweep 90? Google searches for long-sweep 90s come up with a lot that look like this, and a lot that look like very long conduit-style bends that I've never seen in normal plumbing.

 

[Breplum]

The pic above IS long sweep. From your posted pic, I would lean to saying Yes, you have a long sweep.
When making a turn, if the next run is longer than 5', it is best practice and code to have a clean-out there; so, the ideal fitting is a Combo (which is a wye and 1/8th bend combined) with a threaded c.o. adapter fitting.

 

[Sponsor]

 

[Reach4]

Maybe this drawing will help. I see for a regular 4-inch 1/4 bend (part 300), the A dimension is 3-7/8, so a big enough difference.

 

[EverettHarrington]

Yes, that looks like a proper 4in long-sweep 90 for plumbing!