R-414B PT Chart

R-414B saturation pressure, −25 to 150 °F−31 to 65 °C. Used in R-12 retrofits (HotShot).

How to use ↓

Safety class A1Zeotropic blendGlide 13.70 °F at 40 °F evapGlide 7.61 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-414B 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.

The table covers −25 to 150 °F−31 to 65 °C only: the published manufacturer data stops there, and the table is not extrapolated past it.

R-414B saturation pressure by temperature, °F and psig (vacuum in inches of mercury)
°F	Liquid bubble, psig	Vapor dew, psig
-25	1.9	6.8 inHg
-24	2.3	6.2 inHg
-23	2.7	5.5 inHg
-22	3.1	4.9 inHg
-21	3.6	4.2 inHg
-20	4.0	3.5 inHg
-19	4.4	2.9 inHg
-18	4.9	2.2 inHg
-17	5.4	1.4 inHg
-16	5.8	0.7 inHg
-15	6.3	0.0
-14	6.8	0.4
-13	7.3	0.8
-12	7.8	1.2
-11	8.3	1.6
-10	8.8	2.0
-9	9.3	2.4
-8	9.9	2.8
-7	10.4	3.2
-6	11.0	3.7
-5	11.5	4.1
-4	12.1	4.6
-3	12.7	5.0
-2	13.3	5.5
-1	13.9	6.0
0	14.5	6.5
1	15.1	7.0
2	15.7	7.5
3	16.4	8.0
4	17.0	8.5
5	17.7	9.0
6	18.4	9.6
7	19.1	10.1
8	19.8	10.7
9	20.5	11.3
10	21.2	11.9
11	21.9	12.5
12	22.7	13.1
13	23.4	13.7
14	24.2	14.3
15	25.0	14.9
16	25.7	15.6
17	26.5	16.2
18	27.4	16.9
19	28.2	17.6
20	29.0	18.3
21	29.9	19.0
22	30.7	19.7
23	31.6	20.4
24	32.5	21.1
25	33.4	21.9
26	34.3	22.6
27	35.2	23.4
28	36.2	24.2
29	37.1	25.0
30	38.1	25.8
31	39.1	26.6
32	40.1	27.4
33	41.1	28.3
34	42.1	29.2
35	43.1	30.0
36	44.2	30.9
37	45.2	31.8
38	46.3	32.7
39	47.4	33.6
40	48.5	34.6
41	49.6	35.5
42	50.8	36.5
43	51.9	37.5
44	53.1	38.5
45	54.3	39.5
46	55.5	40.5
47	56.7	41.5
48	57.9	42.6
49	59.1	43.7
50	60.4	44.8
51	61.7	45.9
52	63.0	47.0
53	64.3	48.1
54	65.6	49.2
55	67.0	50.4
56	68.3	51.6
57	69.7	52.8
58	71.1	54.0
59	72.5	55.2
60	73.9	56.4
61	75.4	57.7
62	76.8	59.0
63	78.3	60.3
64	79.8	61.6
65	81.3	62.9
66	82.8	64.3
67	84.4	65.6
68	86.0	67.0
69	87.6	68.4
70	89.2	69.8
71	90.8	71.2
72	92.4	72.7
73	94.1	74.2
74	95.8	75.6
75	97.5	77.1
76	99.2	78.7
77	100.9	80.2
78	102.7	81.8
79	104.5	83.4
80	106.3	85.0
81	108.1	86.6
82	109.9	88.2
83	111.8	89.9
84	113.6	91.6
85	115.5	93.3
86	117.5	95.0
87	119.4	96.7
88	121.4	98.5
89	123.3	100.3
90	125.3	102.1
91	127.4	103.9
92	129.4	105.8
93	131.5	107.6
94	133.6	109.5
95	135.7	111.4
96	137.8	113.4
97	139.9	115.3
98	142.1	117.3
99	144.3	119.3
100	146.5	121.3
101	148.8	123.4
102	151.0	125.5
103	153.3	127.6
104	155.6	129.7
105	158.0	131.8
106	160.3	134.0
107	162.7	136.2
108	165.1	138.4
109	167.5	140.6
110	170.0	142.9
111	172.5	145.2
112	175.0	147.5
113	177.5	149.8
114	180.0	152.2
115	182.6	154.5
116	185.2	157.0
117	187.8	159.4
118	190.5	161.9
119	193.1	164.3
120	195.8	166.9
121	198.6	169.4
122	201.3	172.0
123	204.1	174.6
124	206.9	177.2
125	209.7	179.8
126	212.5	182.5
127	215.4	185.2
128	218.3	187.9
129	221.2	190.7
130	224.2	193.5
131	227.2	196.3
132	230.2	199.1
133	233.2	202.0
134	236.3	204.9
135	239.4	207.8
136	242.5	210.8
137	245.6	213.8
138	248.8	216.8
139	252.0	219.8
140	255.2	222.9
141	258.5	226.0
142	261.7	229.2
143	265.0	232.3
144	268.4	235.5
145	271.8	238.8
146	275.1	242.0
147	278.6	245.3
148	282.0	248.6
149	285.5	252.0
150	289.0	255.4

R-414B saturation pressure by temperature, °C and kPa (negative = vacuum)
°C	Liquid bubble, kPa	Vapor dew, kPa
-31	16.6	-20.5
-30	21.7	-16.5
-29	27.0	-12.5
-28	32.5	-8.3
-27	38.2	-3.9
-26	44.0	0.7
-25	50.1	5.4
-24	56.4	10.2
-23	62.8	15.3
-22	69.5	20.5
-21	76.3	25.9
-20	83.4	31.5
-19	90.7	37.3
-18	98.2	43.2
-17	105.9	49.4
-16	113.9	55.8
-15	122.1	62.4
-14	130.5	69.1
-13	139.2	76.2
-12	148.1	83.4
-11	157.3	90.9
-10	166.7	98.5
-9	176.4	106.5
-8	186.4	114.6
-7	196.6	123.0
-6	207.1	131.7
-5	217.9	140.6
-4	228.9	149.8
-3	240.3	159.3
-2	252.0	169.0
-1	263.9	179.0
0	276.2	189.2
1	288.7	199.8
2	301.6	210.6
3	314.8	221.8
4	328.3	233.2
5	342.2	245.0
6	356.4	257.1
7	370.9	269.4
8	385.7	282.1
9	400.9	295.2
10	416.5	308.6
11	432.4	322.3
12	448.7	336.3
13	465.4	350.7
14	482.4	365.5
15	499.8	380.6
16	517.6	396.1
17	535.8	412.0
18	554.3	428.2
19	573.3	444.9
20	592.7	461.9
21	612.5	479.3
22	632.7	497.1
23	653.3	515.4
24	674.3	534.0
25	695.8	553.1
26	717.7	572.6
27	740.1	592.5
28	762.9	612.9
29	786.1	633.7
30	809.8	655.0
31	834.0	676.7
32	858.6	698.9
33	883.7	721.6
34	909.3	744.7
35	935.4	768.4
36	961.9	792.5
37	989.0	817.1
38	1016.5	842.3
39	1044.6	867.9
40	1073.1	894.1
41	1102.2	920.7
42	1131.8	948.0
43	1161.9	975.7
44	1192.6	1004.0
45	1223.8	1032.9
46	1255.5	1062.3
47	1287.8	1092.3
48	1320.6	1122.8
49	1354.0	1153.9
50	1387.9	1185.7
51	1422.4	1218.0
52	1457.5	1250.9
53	1493.2	1284.5
54	1529.5	1318.6
55	1566.3	1353.4
56	1603.7	1388.8
57	1641.8	1424.9
58	1680.4	1461.6
59	1719.7	1498.9
60	1759.6	1537.0
61	1800.1	1575.7
62	1841.2	1615.0
63	1883.0	1655.1
64	1925.4	1695.9
65	1968.5	1737.4

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R-414B PT Chart

°F / psig · Safety class A1 · Zeotropic blend

refrigerantptchart.com

°F	Liquid	Vapor
-25	1.9	6.8"
-24	2.3	6.2"
-23	2.7	5.5"
-22	3.1	4.9"
-21	3.6	4.2"
-20	4.0	3.5"
-19	4.4	2.9"
-18	4.9	2.2"
-17	5.4	1.4"
-16	5.8	0.7"
-15	6.3	0.0
-14	6.8	0.4
-13	7.3	0.8
-12	7.8	1.2
-11	8.3	1.6
-10	8.8	2.0
-9	9.3	2.4
-8	9.9	2.8
-7	10.4	3.2
-6	11.0	3.7
-5	11.5	4.1
-4	12.1	4.6
-3	12.7	5.0
-2	13.3	5.5
-1	13.9	6.0
0	14.5	6.5
1	15.1	7.0
2	15.7	7.5
3	16.4	8.0
4	17.0	8.5
5	17.7	9.0
6	18.4	9.6
7	19.1	10.1
8	19.8	10.7
9	20.5	11.3
10	21.2	11.9
11	21.9	12.5
12	22.7	13.1
13	23.4	13.7
14	24.2	14.3
15	25.0	14.9
16	25.7	15.6
17	26.5	16.2
18	27.4	16.9

°F	Liquid	Vapor
19	28.2	17.6
20	29.0	18.3
21	29.9	19.0
22	30.7	19.7
23	31.6	20.4
24	32.5	21.1
25	33.4	21.9
26	34.3	22.6
27	35.2	23.4
28	36.2	24.2
29	37.1	25.0
30	38.1	25.8
31	39.1	26.6
32	40.1	27.4
33	41.1	28.3
34	42.1	29.2
35	43.1	30.0
36	44.2	30.9
37	45.2	31.8
38	46.3	32.7
39	47.4	33.6
40	48.5	34.6
41	49.6	35.5
42	50.8	36.5
43	51.9	37.5
44	53.1	38.5
45	54.3	39.5
46	55.5	40.5
47	56.7	41.5
48	57.9	42.6
49	59.1	43.7
50	60.4	44.8
51	61.7	45.9
52	63.0	47.0
53	64.3	48.1
54	65.6	49.2
55	67.0	50.4
56	68.3	51.6
57	69.7	52.8
58	71.1	54.0
59	72.5	55.2
60	73.9	56.4
61	75.4	57.7
62	76.8	59.0

°F	Liquid	Vapor
63	78.3	60.3
64	79.8	61.6
65	81.3	62.9
66	82.8	64.3
67	84.4	65.6
68	86.0	67.0
69	87.6	68.4
70	89.2	69.8
71	90.8	71.2
72	92.4	72.7
73	94.1	74.2
74	95.8	75.6
75	97.5	77.1
76	99.2	78.7
77	100.9	80.2
78	102.7	81.8
79	104.5	83.4
80	106.3	85.0
81	108.1	86.6
82	109.9	88.2
83	111.8	89.9
84	113.6	91.6
85	115.5	93.3
86	117.5	95.0
87	119.4	96.7
88	121.4	98.5
89	123.3	100.3
90	125.3	102.1
91	127.4	103.9
92	129.4	105.8
93	131.5	107.6
94	133.6	109.5
95	135.7	111.4
96	137.8	113.4
97	139.9	115.3
98	142.1	117.3
99	144.3	119.3
100	146.5	121.3
101	148.8	123.4
102	151.0	125.5
103	153.3	127.6
104	155.6	129.7
105	158.0	131.8
106	160.3	134.0

°F	Liquid	Vapor
107	162.7	136.2
108	165.1	138.4
109	167.5	140.6
110	170.0	142.9
111	172.5	145.2
112	175.0	147.5
113	177.5	149.8
114	180.0	152.2
115	182.6	154.5
116	185.2	157.0
117	187.8	159.4
118	190.5	161.9
119	193.1	164.3
120	195.8	166.9
121	198.6	169.4
122	201.3	172.0
123	204.1	174.6
124	206.9	177.2
125	209.7	179.8
126	212.5	182.5
127	215.4	185.2
128	218.3	187.9
129	221.2	190.7
130	224.2	193.5
131	227.2	196.3
132	230.2	199.1
133	233.2	202.0
134	236.3	204.9
135	239.4	207.8
136	242.5	210.8
137	245.6	213.8
138	248.8	216.8
139	252.0	219.8
140	255.2	222.9
141	258.5	226.0
142	261.7	229.2
143	265.0	232.3
144	268.4	235.5
145	271.8	238.8
146	275.1	242.0
147	278.6	245.3
148	282.0	248.6
149	285.5	252.0
150	289.0	255.4

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-414B PT Chart

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

refrigerantptchart.com

°C	Liquid	Vapor
-31	16.6	-20.5
-30	21.7	-16.5
-29	27.0	-12.5
-28	32.5	-8.3
-27	38.2	-3.9
-26	44.0	0.7
-25	50.1	5.4
-24	56.4	10.2
-23	62.8	15.3
-22	69.5	20.5
-21	76.3	25.9
-20	83.4	31.5
-19	90.7	37.3
-18	98.2	43.2
-17	105.9	49.4
-16	113.9	55.8
-15	122.1	62.4
-14	130.5	69.1
-13	139.2	76.2
-12	148.1	83.4
-11	157.3	90.9
-10	166.7	98.5
-9	176.4	106.5
-8	186.4	114.6
-7	196.6	123.0
-6	207.1	131.7
-5	217.9	140.6
-4	228.9	149.8
-3	240.3	159.3
-2	252.0	169.0
-1	263.9	179.0
0	276.2	189.2
1	288.7	199.8

°C	Liquid	Vapor
2	301.6	210.6
3	314.8	221.8
4	328.3	233.2
5	342.2	245.0
6	356.4	257.1
7	370.9	269.4
8	385.7	282.1
9	400.9	295.2
10	416.5	308.6
11	432.4	322.3
12	448.7	336.3
13	465.4	350.7
14	482.4	365.5
15	499.8	380.6
16	517.6	396.1
17	535.8	412.0
18	554.3	428.2
19	573.3	444.9
20	592.7	461.9
21	612.5	479.3
22	632.7	497.1
23	653.3	515.4
24	674.3	534.0
25	695.8	553.1
26	717.7	572.6
27	740.1	592.5
28	762.9	612.9
29	786.1	633.7
30	809.8	655.0
31	834.0	676.7
32	858.6	698.9
33	883.7	721.6
34	909.3	744.7

°C	Liquid	Vapor
35	935.4	768.4
36	961.9	792.5
37	989.0	817.1
38	1016.5	842.3
39	1044.6	867.9
40	1073.1	894.1
41	1102.2	920.7
42	1131.8	948.0
43	1161.9	975.7
44	1192.6	1004.0
45	1223.8	1032.9
46	1255.5	1062.3
47	1287.8	1092.3
48	1320.6	1122.8
49	1354.0	1153.9
50	1387.9	1185.7
51	1422.4	1218.0
52	1457.5	1250.9
53	1493.2	1284.5
54	1529.5	1318.6
55	1566.3	1353.4
56	1603.7	1388.8
57	1641.8	1424.9
58	1680.4	1461.6
59	1719.7	1498.9
60	1759.6	1537.0
61	1800.1	1575.7
62	1841.2	1615.0
63	1883.0	1655.1
64	1925.4	1695.9
65	1968.5	1737.4

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-414B chart

This R-414B 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: supplier chart (National Refrigerants). Reference only: always verify with the manufacturer’s data and your gauges.

FAQ

What is the R-414B pressure at 40 °F?

34.6 psig vapor (dew) and 48.5 psig liquid (bubble) at saturation, from the table above.

What is the R-414B pressure at 100 °F?

121.3 psig vapor (dew) and 146.5 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-414B has 13.70 °F of glide at a 40 °F evaporator, so the two columns differ.

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R-414B PT Chart

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R-414B pressure temperature table

How to use

About this R-414B chart

FAQ

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