I have finally exhausted most options.
I am told the water pipe for the static caravan is 20mm MDPE . I have a floe 868 kit that comes with 4 metres of 10mm pipe.
It also has a 15mm Reducing T piece to 10mm . And a straight 10mm connector.

I have purchased a 20mm Tee which was easy to find

but can't find anything to go from 15mm to 10mm, although I have found a reducer from 20mm to 15mm .
I am guessing the only way I can do it is by utilising the 20mm /20mm to 15mm tee piece and find a 15mm block end. ( which I can't find yet.
Any suggestions as the obvious tool station and screwfix don't seem to carry everything.
I am told the water pipe for the static caravan is 20mm MDPE . I have a floe 868 kit that comes with 4 metres of 10mm pipe.
It also has a 15mm Reducing T piece to 10mm . And a straight 10mm connector.

I have purchased a 20mm Tee which was easy to find

but can't find anything to go from 15mm to 10mm, although I have found a reducer from 20mm to 15mm .
I am guessing the only way I can do it is by utilising the 20mm /20mm to 15mm tee piece and find a 15mm block end. ( which I can't find yet.
Any suggestions as the obvious tool station and screwfix don't seem to carry everything.