PT chart · ASHRAE B2L
R-717 PT Chart
R-717 pressure–temperature chart in psig and °F/°C. Ammonia: industrial refrigeration. It is a B2L refrigerant (toxic, mildly flammable): for trained industrial technicians only.
Vacuum readings are shown in inches of mercury (″ Hg) below atmospheric pressure.
| °F | °C | Pressure, psig |
|---|---|---|
| -50 | -45.6 | 14.3″ Hg |
| -45 | -42.8 | 11.7″ Hg |
| -40 | -40.0 | 8.8″ Hg |
| -35 | -37.2 | 5.4″ Hg |
| -30 | -34.4 | 1.7″ Hg |
| -25 | -31.7 | 1.3 |
| -20 | -28.9 | 3.6 |
| -15 | -26.1 | 6.2 |
| -10 | -23.3 | 9.0 |
| -5 | -20.6 | 12.2 |
| 0 | -17.8 | 15.7 |
| 5 | -15.0 | 19.5 |
| 10 | -12.2 | 23.8 |
| 15 | -9.4 | 28.4 |
| 20 | -6.7 | 33.5 |
| 25 | -3.9 | 39.0 |
| 30 | -1.1 | 45.0 |
| 35 | 1.7 | 51.5 |
| 40 | 4.4 | 58.6 |
| 45 | 7.2 | 66.2 |
| 50 | 10.0 | 74.5 |
| 55 | 12.8 | 83.3 |
| 60 | 15.6 | 92.9 |
| 65 | 18.3 | 103.1 |
| 70 | 21.1 | 114.1 |
| 75 | 23.9 | 125.8 |
| 80 | 26.7 | 138.4 |
| 85 | 29.4 | 151.7 |
| 90 | 32.2 | 166.0 |
| 95 | 35.0 | 181.1 |
| 100 | 37.8 | 197.2 |
| 105 | 40.6 | 214.3 |
| 110 | 43.3 | 232.4 |
| 115 | 46.1 | 251.5 |
| 120 | 48.9 | 271.7 |
| 125 | 51.7 | 293.1 |
| 130 | 54.4 | 315.7 |
| 135 | 57.2 | 339.5 |
| 140 | 60.0 | 364.5 |
| 145 | 62.8 | 390.8 |
| 150 | 65.6 | 418.5 |
Source: NIST Chemistry WebBook, SRD 69, saturation properties. Converted from absolute pressure (psia) to psig. Reference only; verify against the equipment manufacturer's data.
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