REFRIGERANT R 134A TEMPERATURE/PRESSURE CHART
TEMPERATURE ° F ° C PRESSURE
PSIG TEMPERATURE ° F ° C PRESSURE
PSIG TEMPERATURE ° F ° C PRESSURE
PSIG
16 - 8.9 15.69 60 15.6 57.47 112 44.4 151.30
18 - 7.8 17.04 65 18.3 64.10 114 45.6 156.10
20 - 6.7 18.43 70 21.1 71.19 116 46.7 161.10
22 - 5.6 19.87 75 23.9 78.75 118 47.8 166.10
24 - 4.4 21.35 80 26.7 86.80 120 48.9 171.30
26 - 3.3 22.88 85 29.4 95.40 122 50.0 176.60
28 - 2.2 24.47 90 32.2 104.40 124 51.1 182.00
30 - 1.1 26.10 91 32.8 106.30 126 52.2 187.50
32 0.0 27.79 92 33.3 108.20 128 53.3 193.10
34 + 1.1 29.52 93 33.9 110.20 130 54.4 198.90
36 2.2 31.32 94 34.4 112.10 135 57.2 213.70
38 3.3 33.17 95 35.0 114.10 140 60.0 229.40
40 4.4 35.07 100 37.8 124.30 145 62.8 245.80
42 5.6 37.03 102 38.9 128.50 150 65.6 263.00
44 6.7 39.05 104 40.0 132.90 155 68.3 281.10
45 7.2 40.09 106 41.1 137.30 160 71.1 300.10
50 10.0 45.48 108 42.2 141.90 165 73.9 320.00
55 12.8 51.27 110 43.3 146.50 170 76.7 340.80
NOTE : This chart can be used to raise the temperature and hence the pressure in the charging cylinder to force the refrigerant in the system if the compressor cannot be run.
The indicated temperature is the refrigerant temperature and not the drum one.
Table 301
WA
Validity : Vapor cycle cooling system - KEITH 12 15-01Page 305
(BA) JUN 02
1 - High pressure gage
2 - High pressure "HIGH" hand valve
3 - Charging cylinder "REF" hand valve
4 - High pressure service valve
5 - Low pressure service valve
6 - Refrigerant drum hand valve
7 - Refrigerant drum
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