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The R-134a and R-1234yf pressure charts are for guidance when using A/C Pro ® recharge kits, refills, and gauges. The charts are intended to help provide an understanding of a vehicle’s air conditioning system pressure, which can be helpful during the diagnostic and recharge processes.
The Pressure/Temperature Chart indicates the pressure and temperature relationship for three automotive refrigerants. Vehicles with a model year 1994 and earlier most likely use . R-12 refrigerant. If you are not the original owner of the vehicle, however, be sure to check. Some owners have retrofited R-12 systems to use the later R-134a.
Saturation Pressure-Temperature Data for R134A (psig)*.
4 kwi 2024 · Learn what car normal AC pressures are for R-134a refrigerant. Correctly understanding and interpreting the normal AC pressures for R-134a is crucial for diagnosing and properly maintaining a vehicle’s AC system. The pressure gauge readings below are for a normally operating AC system.
Basically, this 134A PT chart tells you what is the pressure of R134A refrigerant at certain temperatures. The charts start at the low end (-49°F) and tell you the pressures all the way to the high end (150°F).
25 maj 2019 · May 25, 2019 by Alec Johnson. R-134a is the most common refrigerant found in automobiles today. It has been in use since the early 1990’s and now, in 2019, we are beginning to see it’s popularity wane with the rise of the new HFO refrigerant known as R-1234yf.
Note: Underline figures are in. mercury vacuum.. °F. °C
