View Single Post
  #3  
Old 07-04-2009, 05:07 PM
Matt L Matt L is offline
Registered User
 
Join Date: Oct 2005
Posts: 4,263
The pressure at low temperatures is nearly the same between 12 and 134a. The difference really shows up on the high side.

You will be fine with a 134a-compatible TXV running R12.
Reply With Quote