Buteline from 15mm pipe

[JohnthePainter]

I've been reading a lot of good things about buteline but a few things have me confused...

1. How would you transition from a 15mm setup (under sink for example) to a Buteline setup? Seems like the only do 10mm (surely too small), 16mm and 22mm?
2. What about isolation values etc? Is the idea that this then goes to a copper pipe fitting for isolation values?

Thanks! Just a bit confused...

 

[ShaunCorbs]

Need a transition fitting pg5

http://www.buteline.com/showfile.php?downloadid=258

Honestly I think it's another fad

 

[king of pipes]

Maincor is a better system in my opion i have used it on a timber frame new build excellent for those sort of jobs great for under floor heating aswell check it out cheers kop