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Pressure Temperature Table
* = Vacuum in "Inches of Mercury" (in Hg)
Temp. F
R-22- PSIG
R-123- PSIG
R-134a- PSIG
R-410A- PSIG
60
101.62
11.08*
57.43
170.7
62
105.39
10.23*
60.03
175.0
64
109.26
09.36*
62.70
66
113.22
08.45*
65.43
190.0
68
117.27
07.52*
68.25
195.0
70
121.42
06.55*
71.13
200.0
72
125.66
05.54*
74.09
74
130.00
04.51*
77.13
91.79
76
134.44
03.44*
80.24
78
138.98
02.33*
83.44
230.0
80
143.62
01.18*
86.71
82
148.36
00.00*
90.07
84
153.21
00.60
93.51
250.0
86
158.16
01.22
97.03
260.0
88
163.22
01.85
100.64
90
168.38
02.51
104.33
275.0
92
173.66
03.19
108.12
94
179.05
03.89
111.99
290.0
96
184.54
04.61
115.96
98
190.16
05.35
120.02
100
195.89
06.11
124.17
320.0
Temp. F
R-22
R-123
R-134a
R-410A
102
201.73
06.90
128.41
104
207.70
07.71
132.76
335.0
106
213.78
08.54
137.20
108
219.99
09.40
141.74
110
226.32
10.28
146.38
365.0
112
232.77
11.19
151.13
114
239.36
12.12
155.98
116
246.06
13.08
160.93
118
252.9
14.07
166.0
120
259.87
15.08
171.17
420.0
Add 30° to the outside ambient air temperature (70° is the outside air temp. add 30° that gives you 100°).
Take your P/T chart and see what the head pressure (high pressure line) crosses up to at 100°.
Wiki User
∙ 13y ago
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