Thread: Broken POA Valve?
View Single Post
  #14  
Old 05-14-2024, 12:56 AM
gto4ben gto4ben is online now
Senior Member
  
Join Date: Aug 2006
Location: Los Angeles, CA
Posts: 219
Default
The 1967 Pontiac Service Manual states that the POA operated at 28.5 psig for R12, This corresponds to 30°F. From the R134a pressure temperature curves, a 30°F temp corresponds to a 26.1 psig. This is the nominal setting to strive for.
Attached Thumbnails
Click image for larger version Name: R134a, R12a, R152a R12 Temp-Press Chart 3.jpg Views: 11 Size: 26.5 KB ID: 633701  

Reply With QuoteReply With Quote