What is the working pressure low and high in domestic refrigerator using R134a
That question does not have a simple answer. The pressure is directly related to the temperature. You can go on line and get a table showing the pressure vs temperature. I would think 0 is a good starting point for the return temperature. High is also related to temperature. I would expect the high to be about 135 but that depend on ambient etc. You may have to have a licence to tap the refrigeration system and purchase gas depending on your locaton.
Good Luck,
Gilshultz
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