R-11 PT Chart

R-11 saturation pressure, −40 to 150 °F−40 to 65 °C. Used in legacy centrifugal chillers.

Safety class A1Single component (CFC)No glideNo glide

R-11 (CFC-11) is a CFC. US production and import of CFCs ended on 1 January 1996 (limited exemptions), so systems are serviced from recovered, recycled or previously produced refrigerant. R-11 runs below atmospheric pressure at normal chiller evaporator temperatures: the table shows 15.6 inHg vacuum at 40 °F, and 0 psig is not reached until about 75 °F. Source: US EPA: Phaseout of Class I Ozone-Depleting Substances.

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Step 3 Temperature

°F°C

Type a temperature to see the saturation pressure.

R-11 pressure temperature table

Below 0 psig: inches of mercury vacuum. Highlighted: 40 °F and 100 °F.Negative kPa = vacuum. Highlighted: 4 °C and 38 °C.

R-11 saturation pressure by temperature, °F and psig (vacuum in inches of mercury)
°F	Pressure psig
-40	28.4 inHg
-39	28.4 inHg
-38	28.3 inHg
-37	28.3 inHg
-36	28.2 inHg
-35	28.1 inHg
-34	28.1 inHg
-33	28.0 inHg
-32	28.0 inHg
-31	27.9 inHg
-30	27.8 inHg
-29	27.7 inHg
-28	27.7 inHg
-27	27.6 inHg
-26	27.5 inHg
-25	27.5 inHg
-24	27.4 inHg
-23	27.3 inHg
-22	27.2 inHg
-21	27.1 inHg
-20	27.0 inHg
-19	26.9 inHg
-18	26.8 inHg
-17	26.8 inHg
-16	26.7 inHg
-15	26.6 inHg
-14	26.5 inHg
-13	26.3 inHg
-12	26.2 inHg
-11	26.1 inHg
-10	26.0 inHg
-9	25.9 inHg
-8	25.8 inHg
-7	25.7 inHg
-6	25.5 inHg
-5	25.4 inHg
-4	25.3 inHg
-3	25.1 inHg
-2	25.0 inHg
-1	24.9 inHg
0	24.7 inHg
1	24.6 inHg
2	24.4 inHg
3	24.3 inHg
4	24.1 inHg
5	24.0 inHg
6	23.8 inHg
7	23.6 inHg
8	23.5 inHg
9	23.3 inHg
10	23.1 inHg
11	22.9 inHg
12	22.7 inHg
13	22.5 inHg
14	22.3 inHg
15	22.1 inHg
16	21.9 inHg
17	21.7 inHg
18	21.5 inHg
19	21.3 inHg
20	21.1 inHg
21	20.9 inHg
22	20.6 inHg
23	20.4 inHg
24	20.1 inHg
25	19.9 inHg
26	19.7 inHg
27	19.4 inHg
28	19.1 inHg
29	18.9 inHg
30	18.6 inHg
31	18.3 inHg
32	18.1 inHg
33	17.8 inHg
34	17.5 inHg
35	17.2 inHg
36	16.9 inHg
37	16.6 inHg
38	16.3 inHg
39	15.9 inHg
40	15.6 inHg
41	15.3 inHg
42	14.9 inHg
43	14.6 inHg
44	14.2 inHg
45	13.9 inHg
46	13.5 inHg
47	13.2 inHg
48	12.8 inHg
49	12.4 inHg
50	12.0 inHg
51	11.6 inHg
52	11.2 inHg
53	10.8 inHg
54	10.4 inHg
55	10.0 inHg
56	9.5 inHg
57	9.1 inHg
58	8.6 inHg
59	8.2 inHg
60	7.7 inHg
61	7.2 inHg
62	6.8 inHg
63	6.3 inHg
64	5.8 inHg
65	5.3 inHg
66	4.8 inHg
67	4.3 inHg
68	3.7 inHg
69	3.2 inHg
70	2.7 inHg
71	2.1 inHg
72	1.5 inHg
73	1.0 inHg
74	0.4 inHg
75	0.1
76	0.4
77	0.7
78	1.0
79	1.3
80	1.6
81	1.9
82	2.2
83	2.6
84	2.9
85	3.2
86	3.6
87	3.9
88	4.3
89	4.6
90	5.0
91	5.4
92	5.7
93	6.1
94	6.5
95	6.9
96	7.3
97	7.7
98	8.1
99	8.5
100	8.9
101	9.3
102	9.7
103	10.2
104	10.6
105	11.0
106	11.5
107	12.0
108	12.4
109	12.9
110	13.4
111	13.8
112	14.3
113	14.8
114	15.3
115	15.8
116	16.3
117	16.9
118	17.4
119	17.9
120	18.5
121	19.0
122	19.6
123	20.1
124	20.7
125	21.3
126	21.8
127	22.4
128	23.0
129	23.6
130	24.2
131	24.8
132	25.5
133	26.1
134	26.7
135	27.4
136	28.0
137	28.7
138	29.4
139	30.1
140	30.7
141	31.4
142	32.1
143	32.8
144	33.6
145	34.3
146	35.0
147	35.8
148	36.5
149	37.3
150	38.0

R-11 saturation pressure by temperature, °C and kPa (negative = vacuum)
°C	Pressure kPa
-40	-96.2
-39	-95.9
-38	-95.6
-37	-95.2
-36	-94.8
-35	-94.4
-34	-94.0
-33	-93.6
-32	-93.1
-31	-92.6
-30	-92.1
-29	-91.6
-28	-91.0
-27	-90.5
-26	-89.9
-25	-89.2
-24	-88.6
-23	-87.9
-22	-87.1
-21	-86.4
-20	-85.6
-19	-84.8
-18	-83.9
-17	-83.0
-16	-82.1
-15	-81.1
-14	-80.1
-13	-79.1
-12	-78.0
-11	-76.8
-10	-75.7
-9	-74.4
-8	-73.2
-7	-71.8
-6	-70.5
-5	-69.0
-4	-67.6
-3	-66.0
-2	-64.5
-1	-62.8
0	-61.1
1	-59.4
2	-57.6
3	-55.7
4	-53.7
5	-51.7
6	-49.7
7	-47.5
8	-45.3
9	-43.0
10	-40.6
11	-38.2
12	-35.7
13	-33.1
14	-30.4
15	-27.7
16	-24.9
17	-21.9
18	-18.9
19	-15.8
20	-12.6
21	-9.4
22	-6.0
23	-2.5
24	1.1
25	4.7
26	8.5
27	12.4
28	16.3
29	20.4
30	24.6
31	28.9
32	33.4
33	37.9
34	42.6
35	47.3
36	52.2
37	57.3
38	62.4
39	67.7
40	73.1
41	78.6
42	84.3
43	90.1
44	96.1
45	102.2
46	108.4
47	114.8
48	121.3
49	128.0
50	134.8
51	141.8
52	148.9
53	156.2
54	163.7
55	171.3
56	179.1
57	187.1
58	195.2
59	203.5
60	212.0
61	220.6
62	229.4
63	238.5
64	247.7
65	257.0

Back to the lookup ↑

R-11 PT Chart

°F / psig · Safety class A1 · Single component (CFC)

refrigerantptchart.com

°F	psig
-40	28.4"
-39	28.4"
-38	28.3"
-37	28.3"
-36	28.2"
-35	28.1"
-34	28.1"
-33	28.0"
-32	28.0"
-31	27.9"
-30	27.8"
-29	27.7"
-28	27.7"
-27	27.6"
-26	27.5"
-25	27.5"
-24	27.4"
-23	27.3"
-22	27.2"
-21	27.1"
-20	27.0"
-19	26.9"
-18	26.8"
-17	26.8"
-16	26.7"
-15	26.6"
-14	26.5"
-13	26.3"
-12	26.2"
-11	26.1"
-10	26.0"
-9	25.9"
-8	25.8"
-7	25.7"
-6	25.5"
-5	25.4"
-4	25.3"
-3	25.1"
-2	25.0"
-1	24.9"
0	24.7"
1	24.6"
2	24.4"
3	24.3"
4	24.1"
5	24.0"
6	23.8"
7	23.6"

°F	psig
8	23.5"
9	23.3"
10	23.1"
11	22.9"
12	22.7"
13	22.5"
14	22.3"
15	22.1"
16	21.9"
17	21.7"
18	21.5"
19	21.3"
20	21.1"
21	20.9"
22	20.6"
23	20.4"
24	20.1"
25	19.9"
26	19.7"
27	19.4"
28	19.1"
29	18.9"
30	18.6"
31	18.3"
32	18.1"
33	17.8"
34	17.5"
35	17.2"
36	16.9"
37	16.6"
38	16.3"
39	15.9"
40	15.6"
41	15.3"
42	14.9"
43	14.6"
44	14.2"
45	13.9"
46	13.5"
47	13.2"
48	12.8"
49	12.4"
50	12.0"
51	11.6"
52	11.2"
53	10.8"
54	10.4"
55	10.0"

°F	psig
56	9.5"
57	9.1"
58	8.6"
59	8.2"
60	7.7"
61	7.2"
62	6.8"
63	6.3"
64	5.8"
65	5.3"
66	4.8"
67	4.3"
68	3.7"
69	3.2"
70	2.7"
71	2.1"
72	1.5"
73	1.0"
74	0.4"
75	0.1
76	0.4
77	0.7
78	1.0
79	1.3
80	1.6
81	1.9
82	2.2
83	2.6
84	2.9
85	3.2
86	3.6
87	3.9
88	4.3
89	4.6
90	5.0
91	5.4
92	5.7
93	6.1
94	6.5
95	6.9
96	7.3
97	7.7
98	8.1
99	8.5
100	8.9
101	9.3
102	9.7
103	10.2

°F	psig
104	10.6
105	11.0
106	11.5
107	12.0
108	12.4
109	12.9
110	13.4
111	13.8
112	14.3
113	14.8
114	15.3
115	15.8
116	16.3
117	16.9
118	17.4
119	17.9
120	18.5
121	19.0
122	19.6
123	20.1
124	20.7
125	21.3
126	21.8
127	22.4
128	23.0
129	23.6
130	24.2
131	24.8
132	25.5
133	26.1
134	26.7
135	27.4
136	28.0
137	28.7
138	29.4
139	30.1
140	30.7
141	31.4
142	32.1
143	32.8
144	33.6
145	34.3
146	35.0
147	35.8
148	36.5
149	37.3
150	38.0

Italic " = inches of mercury vacuum. Bold rows: 40 °F and 100 °F. Reference only: always verify with the manufacturer’s data and your gauges.

R-11 PT Chart

°C / kPa (gauge) · Safety class A1 · Single component (CFC)

refrigerantptchart.com

°C	kPa
-40	-96.2
-39	-95.9
-38	-95.6
-37	-95.2
-36	-94.8
-35	-94.4
-34	-94.0
-33	-93.6
-32	-93.1
-31	-92.6
-30	-92.1
-29	-91.6
-28	-91.0
-27	-90.5
-26	-89.9
-25	-89.2
-24	-88.6
-23	-87.9
-22	-87.1
-21	-86.4
-20	-85.6
-19	-84.8
-18	-83.9
-17	-83.0
-16	-82.1
-15	-81.1
-14	-80.1
-13	-79.1
-12	-78.0
-11	-76.8
-10	-75.7
-9	-74.4
-8	-73.2
-7	-71.8
-6	-70.5
-5	-69.0

°C	kPa
-4	-67.6
-3	-66.0
-2	-64.5
-1	-62.8
0	-61.1
1	-59.4
2	-57.6
3	-55.7
4	-53.7
5	-51.7
6	-49.7
7	-47.5
8	-45.3
9	-43.0
10	-40.6
11	-38.2
12	-35.7
13	-33.1
14	-30.4
15	-27.7
16	-24.9
17	-21.9
18	-18.9
19	-15.8
20	-12.6
21	-9.4
22	-6.0
23	-2.5
24	1.1
25	4.7
26	8.5
27	12.4
28	16.3
29	20.4
30	24.6
31	28.9

°C	kPa
32	33.4
33	37.9
34	42.6
35	47.3
36	52.2
37	57.3
38	62.4
39	67.7
40	73.1
41	78.6
42	84.3
43	90.1
44	96.1
45	102.2
46	108.4
47	114.8
48	121.3
49	128.0
50	134.8
51	141.8
52	148.9
53	156.2
54	163.7
55	171.3
56	179.1
57	187.1
58	195.2
59	203.5
60	212.0
61	220.6
62	229.4
63	238.5
64	247.7
65	257.0

Negative kPa = vacuum. Bold rows: 4 °C and 38 °C. Reference only: always verify with the manufacturer’s data and your gauges.

How to use

Choose Temperature or Pressure and type the number. The answer shows straight away.
Blends show two values: use vapor (dew) for superheat and liquid (bubble) for subcooling.
Tap °C · kPa for metric. Below 0 psig, pressure is in inches of mercury (inHg) vacuum.
Press Print pocket chart for a one-page chart (Letter or A4) for the van or the tool bag.

About this R-11 chart

This R-11 pressure temperature chart gives the saturation pressure for every degree, in psig with °F or kPa (gauge) with °C. Below 0 psig the °F table shows inches of mercury (inHg) vacuum.

Source: supplier chart (National Refrigerants), checked against NIST. Reference only: always verify with the manufacturer’s data and your gauges.

FAQ

What is the R-11 pressure at 40 °F?

15.6 inHg vacuum at saturation, from the table above.

What is the R-11 pressure at 100 °F?

8.9 psig at saturation.

Does R-11 have glide?

No. R-11 is a single-component refrigerant, so one saturation pressure works for both superheat and subcooling.

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R-11 PT Chart

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R-11 pressure temperature table

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