Quote:
Originally Posted by Mikesolar
The Brits used it. It was called Microbore (?) or something like it. It might have been 8mm but 15mm is normal here (5/8")
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Yes we call it Microbore, 8mm OD used to be common.
Generally 10mm OD minimum now although mostly 15mm, 8mm and i guess 10mm to a lesser degree has a tendency to become blocked with sludge in older systems. May not be such an issue with modern pressurised systems ?
Steve