"Mungo" wrote in message
ups.com...
Hi Folks,
A quick Google hasn't turned up any sources, so does anyone have a
source of fittings to connect 5mm plastic tubing to (say) 15mm copper
pipe?

How about a "Gardena Micro Drip Irrigation - Master Unit 1000 1355 -20"
from
http://www.grovelands.com/acatalog/G..._watering.html

"Supplied with fittings to enable either ½" (13mm) Supply Tube or 3/16"
(4.6mm) Branch Tube to be fitted directly to the unit. A stainless steel
clip enables quick & easy connection or disconnection to the tube."

So the 4.6mm fitting should be ok if the tube is a but stretchy!

this will do the pressure reducing too :-)

Sparks...