In message , Grimly
Curmudgeon writes
We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember Bill saying
something like:

I've put some pics that might be visible at

https://picasaweb.google.com/billaboard/PipeJoint

Any simple low-cost suggestions?

That looks like Alkathene pipe, beloved of farmers. Hie thee doon to a
farm supplies stockist and get the necessary fittings. You'll probably
find the outside will take a 3/4" (or 22mm) olive and once it's
compressed into place the pipe won't budge (it's the 3/4" OD, 1/2" ID
pipe, I assume). You don't need an insert for the thick walled stuff.

Thanks for all the replies. Very helpful, unlike the weather today.

I'll measure up, find suppliers - agricultural or the Grahams near us -
buy some bits and wait for a day when we are both there and the rain
stops.
--
Bill