Are 90 degree soil waste bends available?

I think they're generally 87.5/92.5 to maintain the fall, you might need to use one of the 0-90 degree adjustable ones if you actually need 90 degrees.

but they're not especially compact

Isn't there enough "flex" in the joint (and the pipe) to be able to force it back to 90 degrees? ISTR that I had a similar situation some time in the past and was able to sort it out without a special bend.

Ok, but what I specifically need to know is whether there is an actual 90 ( ninety) degree bend available in the market place or not. I have a feeling the answer will be no but there's an awful lot of ads on ebay that say they are 90 degrees and not 92.5...I suppose they could just be being lazy with the wording of their ads!

But if there is a proper 90 degree bend then I'm going to send the one they sent me (a 92.5 degree one) back as they advertised it as a 90 degree.

There's usually 2-3 degrees of slop in those anyway - is it solvent weld or push fit?

It's a push fit but using it for the installation isn't the issue...as I sa id I can bodge it to make it work. The issue is, as in my original question , whether there is an actual exact 90 degree bend available on the market a s opposed to the usual 92.5 degree bends? A bit more research on my part si nce I asked the question suggests there probably isn't.

Well the 90 degree bends do exist. Here's one:

Pity they only do grey though, I need black.

Building regulations do not allow a 90 degree horizontal bend without installing a rodding point - typically a man hole - IIRC.

So they are not sold.

Oh its above ground?

Then you should be able to get it with a rodding pint installed.

and select 90 degree access point.

is that what you want?

The problem appears to be that many eBay sellers lazily call a 92.5 bend a

This:

is the actual, genuine 90 degree bend I want. So the eBay one is going back .

No, that site shows stuff with the 90 +- 2.5% bend. As I said, you need a rodding eye if its 90 degrees, which that is.

I've never been very good at spacial perception, so perhaps I'm having trouble with something that other people find obvious. However, I don't see why you can't maintain the fall with a 90 degree bend? You just rotate the fitting slightly, and you can get anything between a 0 and 90 degree fall?

you can only do that with a pair of bends but will get an offset. A pipe running at 2.5 degrees off horizontal will make a 92.5 degree angle with the stack hence the angle of the bend there is no possibility of rotating the fitting to change that angle.

From a horizontal pipe. yes.

Not from a vertical.

though wherer 82.5 fits in I cant quite see at this point in time

(More or less) *horizontal* pipes are supposed to be laid with no bends so they can be rodded, therefore where a direction change takes place you have a rodding point (above ground) or a manhole chamber (below ground. Pipe runs between are straight with a 2.5 degree fall.

Above ground you generally want to get TO the ground using vertivcal pipes. If these have to dogleg they need the horizontal to have fall. Usually that's 45 degree, but it can be nearly horizontal.

I'd have put a small wager on 90 degree bend being unavailable but that one actually says 90 degree in the moulding if you zoom in on the photo.

I've learned something from this thread!

There are quite a few single socket 90 bends about but you really need to check that they are actually 90.

You could use ..