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Midwestrefer
03-05-2011, 10:39 PM
Hi, been in the business for 6-8 months. Came from plumbing background until work here in KC dried up.

My first ever question:
Had been using press connect - Viega and NIBCO - copper press connections in plumbing which had been saving my uncles firm a bunch of time PLUS was no-flame.
Why hasnt this technology been used in refrigeration. If its a compatability of the o-ring with R-410a surely there is an o-ring of a different material that would suit?
Called Viega, they were ZERO help.
Seems a no brainer to me. Googled flame free alternatives are they seem too high tech.

Thankyou
Sam

install monkey
03-05-2011, 10:44 PM
in uk, vulcan loc rings are used apparently good for upto 60bar pressure but can leak if fitted poorly.

Brian_UK
03-05-2011, 10:52 PM
Try Google, it's pretty good. ;)

http://www.lokringusa.com/

Midwestrefer
03-05-2011, 10:57 PM
thanks install monkey. I had searched the forum and came accross the pros and cons (mainly price) but wondered why press/viega technology hadnt been adapted. Or why it doesnt work?
Thanks Sam

Brian_UK
03-05-2011, 11:09 PM
As Viega only guarantee the fittings to 85psi they wouldn't be much use in refrigeration when we test to 400psi and beyond.