R-448A PT Chart

R-448A saturation pressure, −40 to 150 °F−40 to 65 °C. Used in commercial refrigeration (an R-404A replacement).

How to use ↓

Safety class A1Zeotropic blendGlide 10.17 °F at 40 °F evapGlide 5.65 K at 4.4 °C evap

PT lookup

Step 1 Refrigerant

Step 2 I know the

Temperature Pressure

Step 3 Temperature

°F°C

Type a temperature to see the saturation pressure.

R-448A pressure temperature table

Liquid = bubble (subcooling). Vapor = dew (superheat). Below 0 psig: inches of mercury vacuum. Highlighted: 40 °F and 100 °F.Liquid = bubble (subcooling). Vapor = dew (superheat). Negative kPa = vacuum. Highlighted: 4 °C and 38 °C.

R-448A saturation pressure by temperature, °F and psig (vacuum in inches of mercury)
°F	Liquid bubble, psig	Vapor dew, psig
-40	4.9	0.1 inHg
-39	5.4	0.4
-38	5.9	0.8
-37	6.4	1.2
-36	7.0	1.6
-35	7.5	2.1
-34	8.1	2.5
-33	8.6	3.0
-32	9.2	3.4
-31	9.8	3.9
-30	10.4	4.4
-29	11.0	4.9
-28	11.6	5.4
-27	12.2	5.9
-26	12.9	6.5
-25	13.5	7.0
-24	14.2	7.5
-23	14.9	8.1
-22	15.6	8.7
-21	16.3	9.2
-20	17.0	9.8
-19	17.7	10.4
-18	18.5	11.1
-17	19.2	11.7
-16	20.0	12.3
-15	20.8	13.0
-14	21.6	13.6
-13	22.4	14.3
-12	23.2	15.0
-11	24.0	15.7
-10	24.9	16.4
-9	25.8	17.1
-8	26.6	17.9
-7	27.5	18.6
-6	28.4	19.4
-5	29.4	20.2
-4	30.3	21.0
-3	31.2	21.8
-2	32.2	22.6
-1	33.2	23.4
0	34.2	24.3
1	35.2	25.1
2	36.2	26.0
3	37.3	26.9
4	38.4	27.8
5	39.4	28.8
6	40.5	29.7
7	41.7	30.6
8	42.8	31.6
9	43.9	32.6
10	45.1	33.6
11	46.3	34.6
12	47.5	35.7
13	48.7	36.7
14	49.9	37.8
15	51.2	38.9
16	52.5	40.0
17	53.8	41.1
18	55.1	42.2
19	56.4	43.4
20	57.8	44.6
21	59.1	45.8
22	60.5	47.0
23	61.9	48.2
24	63.3	49.4
25	64.8	50.7
26	66.3	52.0
27	67.8	53.3
28	69.3	54.6
29	70.8	56.0
30	72.3	57.3
31	73.9	58.7
32	75.5	60.1
33	77.1	61.5
34	78.7	63.0
35	80.4	64.4
36	82.1	65.9
37	83.8	67.4
38	85.5	69.0
39	87.3	70.5
40	89.0	72.1
41	90.8	73.7
42	92.6	75.3
43	94.5	76.9
44	96.3	78.6
45	98.2	80.3
46	100.1	82.0
47	102.0	83.7
48	104.0	85.4
49	106.0	87.2
50	108.0	89.0
51	110.0	90.8
52	112.1	92.7
53	114.1	94.6
54	116.3	96.5
55	118.4	98.4
56	120.5	100.3
57	122.7	102.3
58	124.9	104.3
59	127.2	106.3
60	129.4	108.4
61	131.7	110.4
62	134.0	112.5
63	136.4	114.7
64	138.7	116.8
65	141.1	119.0
66	143.5	121.2
67	146.0	123.4
68	148.5	125.7
69	151.0	128.0
70	153.5	130.3
71	156.1	132.7
72	158.7	135.1
73	161.3	137.5
74	163.9	139.9
75	166.6	142.4
76	169.3	144.9
77	172.1	147.4
78	174.8	149.9
79	177.6	152.5
80	180.5	155.1
81	183.3	157.8
82	186.2	160.5
83	189.1	163.2
84	192.1	165.9
85	195.1	168.7
86	198.1	171.5
87	201.1	174.3
88	204.2	177.2
89	207.3	180.1
90	210.5	183.0
91	213.7	186.0
92	216.9	189.0
93	220.1	192.1
94	223.4	195.1
95	226.7	198.2
96	230.0	201.4
97	233.4	204.6
98	236.8	207.8
99	240.3	211.0
100	243.7	214.3
101	247.3	217.6
102	250.8	221.0
103	254.4	224.4
104	258.0	227.8
105	261.7	231.3
106	265.4	234.8
107	269.1	238.3
108	272.8	241.9
109	276.6	245.6
110	280.5	249.2
111	284.4	252.9
112	288.3	256.7
113	292.2	260.5
114	296.2	264.3
115	300.2	268.1
116	304.3	272.1
117	308.4	276.0
118	312.5	280.0
119	316.7	284.0
120	320.9	288.1
121	325.2	292.2
122	329.5	296.4
123	333.8	300.6
124	338.2	304.9
125	342.6	309.2
126	347.1	313.5
127	351.6	317.9
128	356.1	322.3
129	360.7	326.8
130	365.3	331.3
131	369.9	335.9
132	374.7	340.5
133	379.4	345.2
134	384.2	349.9
135	389.0	354.7
136	393.9	359.5
137	398.8	364.4
138	403.8	369.3
139	408.8	374.3
140	413.8	379.3
141	418.9	384.4
142	424.0	389.6
143	429.2	394.8
144	434.4	400.0
145	439.7	405.3
146	445.0	410.7
147	450.4	416.1
148	455.8	421.6
149	461.2	427.1
150	466.7	432.7

R-448A saturation pressure by temperature, °C and kPa (negative = vacuum)
°C	Liquid bubble, kPa	Vapor dew, kPa
-40	33.8	-0.2
-39	40.1	4.8
-38	46.6	10.1
-37	53.3	15.5
-36	60.3	21.2
-35	67.5	27.0
-34	75.0	33.1
-33	82.7	39.4
-32	90.7	46.0
-31	98.9	52.7
-30	107.4	59.8
-29	116.2	67.0
-28	125.3	74.5
-27	134.7	82.3
-26	144.3	90.4
-25	154.3	98.7
-24	164.6	107.3
-23	175.2	116.2
-22	186.1	125.3
-21	197.3	134.8
-20	208.9	144.6
-19	220.8	154.7
-18	233.0	165.1
-17	245.6	175.8
-16	258.6	186.9
-15	271.9	198.3
-14	285.7	210.0
-13	299.7	222.1
-12	314.2	234.5
-11	329.1	247.3
-10	344.4	260.5
-9	360.0	274.1
-8	376.1	288.0
-7	392.6	302.4
-6	409.6	317.1
-5	426.9	332.3
-4	444.7	347.8
-3	463.0	363.8
-2	481.7	380.2
-1	500.9	397.1
0	520.6	414.4
1	540.7	432.2
2	561.3	450.4
3	582.4	469.1
4	604.0	488.2
5	626.1	507.9
6	648.7	528.0
7	671.9	548.7
8	695.6	569.9
9	719.8	591.5
10	744.5	613.7
11	769.8	636.5
12	795.7	659.8
13	822.1	683.6
14	849.2	708.0
15	876.7	733.0
16	904.9	758.6
17	933.7	784.7
18	963.1	811.4
19	993.1	838.8
20	1023.7	866.8
21	1054.9	895.3
22	1086.8	924.6
23	1119.4	954.4
24	1152.5	985.0
25	1186.4	1016.1
26	1220.9	1048.0
27	1256.1	1080.6
28	1292.0	1113.8
29	1328.5	1147.7
30	1365.8	1182.4
31	1403.8	1217.8
32	1442.5	1253.9
33	1481.9	1290.8
34	1522.1	1328.4
35	1563.0	1366.8
36	1604.6	1406.0
37	1647.0	1446.0
38	1690.2	1486.7
39	1734.2	1528.3
40	1778.9	1570.8
41	1824.5	1614.0
42	1870.8	1658.2
43	1918.0	1703.1
44	1966.0	1749.0
45	2014.8	1795.8
46	2064.4	1843.5
47	2114.9	1892.1
48	2166.3	1941.6
49	2218.5	1992.1
50	2271.7	2043.6
51	2325.7	2096.0
52	2380.5	2149.5
53	2436.3	2203.9
54	2493.1	2259.5
55	2550.7	2316.0
56	2609.3	2373.7
57	2668.8	2432.4
58	2729.3	2492.3
59	2790.7	2553.3
60	2853.1	2615.5
61	2916.5	2678.8
62	2980.9	2743.4
63	3046.3	2809.2
64	3112.7	2876.4
65	3180.1	2944.8

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R-448A PT Chart

°F / psig · Safety class A1 · Zeotropic blend

refrigerantptchart.com

°F	Liquid	Vapor
-40	4.9	0.1"
-39	5.4	0.4
-38	5.9	0.8
-37	6.4	1.2
-36	7.0	1.6
-35	7.5	2.1
-34	8.1	2.5
-33	8.6	3.0
-32	9.2	3.4
-31	9.8	3.9
-30	10.4	4.4
-29	11.0	4.9
-28	11.6	5.4
-27	12.2	5.9
-26	12.9	6.5
-25	13.5	7.0
-24	14.2	7.5
-23	14.9	8.1
-22	15.6	8.7
-21	16.3	9.2
-20	17.0	9.8
-19	17.7	10.4
-18	18.5	11.1
-17	19.2	11.7
-16	20.0	12.3
-15	20.8	13.0
-14	21.6	13.6
-13	22.4	14.3
-12	23.2	15.0
-11	24.0	15.7
-10	24.9	16.4
-9	25.8	17.1
-8	26.6	17.9
-7	27.5	18.6
-6	28.4	19.4
-5	29.4	20.2
-4	30.3	21.0
-3	31.2	21.8
-2	32.2	22.6
-1	33.2	23.4
0	34.2	24.3
1	35.2	25.1
2	36.2	26.0
3	37.3	26.9
4	38.4	27.8
5	39.4	28.8
6	40.5	29.7
7	41.7	30.6

°F	Liquid	Vapor
8	42.8	31.6
9	43.9	32.6
10	45.1	33.6
11	46.3	34.6
12	47.5	35.7
13	48.7	36.7
14	49.9	37.8
15	51.2	38.9
16	52.5	40.0
17	53.8	41.1
18	55.1	42.2
19	56.4	43.4
20	57.8	44.6
21	59.1	45.8
22	60.5	47.0
23	61.9	48.2
24	63.3	49.4
25	64.8	50.7
26	66.3	52.0
27	67.8	53.3
28	69.3	54.6
29	70.8	56.0
30	72.3	57.3
31	73.9	58.7
32	75.5	60.1
33	77.1	61.5
34	78.7	63.0
35	80.4	64.4
36	82.1	65.9
37	83.8	67.4
38	85.5	69.0
39	87.3	70.5
40	89.0	72.1
41	90.8	73.7
42	92.6	75.3
43	94.5	76.9
44	96.3	78.6
45	98.2	80.3
46	100.1	82.0
47	102.0	83.7
48	104.0	85.4
49	106.0	87.2
50	108.0	89.0
51	110.0	90.8
52	112.1	92.7
53	114.1	94.6
54	116.3	96.5
55	118.4	98.4

°F	Liquid	Vapor
56	120.5	100.3
57	122.7	102.3
58	124.9	104.3
59	127.2	106.3
60	129.4	108.4
61	131.7	110.4
62	134.0	112.5
63	136.4	114.7
64	138.7	116.8
65	141.1	119.0
66	143.5	121.2
67	146.0	123.4
68	148.5	125.7
69	151.0	128.0
70	153.5	130.3
71	156.1	132.7
72	158.7	135.1
73	161.3	137.5
74	163.9	139.9
75	166.6	142.4
76	169.3	144.9
77	172.1	147.4
78	174.8	149.9
79	177.6	152.5
80	180.5	155.1
81	183.3	157.8
82	186.2	160.5
83	189.1	163.2
84	192.1	165.9
85	195.1	168.7
86	198.1	171.5
87	201.1	174.3
88	204.2	177.2
89	207.3	180.1
90	210.5	183.0
91	213.7	186.0
92	216.9	189.0
93	220.1	192.1
94	223.4	195.1
95	226.7	198.2
96	230.0	201.4
97	233.4	204.6
98	236.8	207.8
99	240.3	211.0
100	243.7	214.3
101	247.3	217.6
102	250.8	221.0
103	254.4	224.4

°F	Liquid	Vapor
104	258.0	227.8
105	261.7	231.3
106	265.4	234.8
107	269.1	238.3
108	272.8	241.9
109	276.6	245.6
110	280.5	249.2
111	284.4	252.9
112	288.3	256.7
113	292.2	260.5
114	296.2	264.3
115	300.2	268.1
116	304.3	272.1
117	308.4	276.0
118	312.5	280.0
119	316.7	284.0
120	320.9	288.1
121	325.2	292.2
122	329.5	296.4
123	333.8	300.6
124	338.2	304.9
125	342.6	309.2
126	347.1	313.5
127	351.6	317.9
128	356.1	322.3
129	360.7	326.8
130	365.3	331.3
131	369.9	335.9
132	374.7	340.5
133	379.4	345.2
134	384.2	349.9
135	389.0	354.7
136	393.9	359.5
137	398.8	364.4
138	403.8	369.3
139	408.8	374.3
140	413.8	379.3
141	418.9	384.4
142	424.0	389.6
143	429.2	394.8
144	434.4	400.0
145	439.7	405.3
146	445.0	410.7
147	450.4	416.1
148	455.8	421.6
149	461.2	427.1
150	466.7	432.7

Liquid = bubble (use for subcooling). Vapor = dew (use for superheat). 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-448A PT Chart

°C / kPa (gauge) · Safety class A1 · Zeotropic blend

refrigerantptchart.com

°C	Liquid	Vapor
-40	33.8	-0.2
-39	40.1	4.8
-38	46.6	10.1
-37	53.3	15.5
-36	60.3	21.2
-35	67.5	27.0
-34	75.0	33.1
-33	82.7	39.4
-32	90.7	46.0
-31	98.9	52.7
-30	107.4	59.8
-29	116.2	67.0
-28	125.3	74.5
-27	134.7	82.3
-26	144.3	90.4
-25	154.3	98.7
-24	164.6	107.3
-23	175.2	116.2
-22	186.1	125.3
-21	197.3	134.8
-20	208.9	144.6
-19	220.8	154.7
-18	233.0	165.1
-17	245.6	175.8
-16	258.6	186.9
-15	271.9	198.3
-14	285.7	210.0
-13	299.7	222.1
-12	314.2	234.5
-11	329.1	247.3
-10	344.4	260.5
-9	360.0	274.1
-8	376.1	288.0
-7	392.6	302.4
-6	409.6	317.1
-5	426.9	332.3

°C	Liquid	Vapor
-4	444.7	347.8
-3	463.0	363.8
-2	481.7	380.2
-1	500.9	397.1
0	520.6	414.4
1	540.7	432.2
2	561.3	450.4
3	582.4	469.1
4	604.0	488.2
5	626.1	507.9
6	648.7	528.0
7	671.9	548.7
8	695.6	569.9
9	719.8	591.5
10	744.5	613.7
11	769.8	636.5
12	795.7	659.8
13	822.1	683.6
14	849.2	708.0
15	876.7	733.0
16	904.9	758.6
17	933.7	784.7
18	963.1	811.4
19	993.1	838.8
20	1023.7	866.8
21	1054.9	895.3
22	1086.8	924.6
23	1119.4	954.4
24	1152.5	985.0
25	1186.4	1016.1
26	1220.9	1048.0
27	1256.1	1080.6
28	1292.0	1113.8
29	1328.5	1147.7
30	1365.8	1182.4
31	1403.8	1217.8

°C	Liquid	Vapor
32	1442.5	1253.9
33	1481.9	1290.8
34	1522.1	1328.4
35	1563.0	1366.8
36	1604.6	1406.0
37	1647.0	1446.0
38	1690.2	1486.7
39	1734.2	1528.3
40	1778.9	1570.8
41	1824.5	1614.0
42	1870.8	1658.2
43	1918.0	1703.1
44	1966.0	1749.0
45	2014.8	1795.8
46	2064.4	1843.5
47	2114.9	1892.1
48	2166.3	1941.6
49	2218.5	1992.1
50	2271.7	2043.6
51	2325.7	2096.0
52	2380.5	2149.5
53	2436.3	2203.9
54	2493.1	2259.5
55	2550.7	2316.0
56	2609.3	2373.7
57	2668.8	2432.4
58	2729.3	2492.3
59	2790.7	2553.3
60	2853.1	2615.5
61	2916.5	2678.8
62	2980.9	2743.4
63	3046.3	2809.2
64	3112.7	2876.4
65	3180.1	2944.8

Liquid = bubble (use for subcooling). Vapor = dew (use for superheat). 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-448A chart

This R-448A pressure temperature chart gives the saturation pressure for every degree, in psig with °F or kPa (gauge) with °C. As a blend, it has a liquid (bubble) and a vapor (dew) column. Below 0 psig the °F table shows inches of mercury (inHg) vacuum.

Source: manufacturer and supplier charts (Chemours, Honeywell, Arkema, A-Gas). Reference only: always verify with the manufacturer’s data and your gauges.

FAQ

What is the R-448A pressure at 40 °F?

72.1 psig vapor (dew) and 89.0 psig liquid (bubble) at saturation, from the table above.

What is the R-448A pressure at 100 °F?

214.3 psig vapor (dew) and 243.7 psig liquid (bubble) at saturation.

Which column do I use for superheat and subcooling?

Use vapor (dew) for superheat and liquid (bubble) for subcooling. R-448A has 10.17 °F of glide at a 40 °F evaporator, so the two columns differ.

R-448A PT Chart

PT lookup

R-448A pressure temperature table

How to use

About this R-448A chart

FAQ

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