Hi Kaveman52, thanks for getting in touch and apologies for the delay in getting back to you.
Yes, the Hep2O couplers will fit directly over 10mm copper.
Hope this helps, don't hesitate to be in touch if there's anything else you need to know.
Thanks, Hep2O team
Answered by: Liam at Wavin
Date published: 2020-06-28