Quote Originally Posted by Xeon th MG Pony View Post
freezing it just makes the refrigerant slower to boil off thus as you purge lends to les mixing, remember refrigerant is heavier then air, so all the air is sitting ontop of the R-134a gas. As we bleed off the air the R-134a will expand pushing the air off, as we do this our pressure tempriture relationship will again match saturated 134a.
ahh now i get it so the o2 sits on top of the gas
so a wid guess is the pressure a set value?
or is it like 0 psig making -15 for r134a?
or other random figure
will the same work for all gas or just 134a
on and thanks for the help