PT chart · ASHRAE A1
R-513A PT Chart
R-513A pressure–temperature chart in psig and °F/°C. Medium-temp refrigeration and chillers (R-134a replacement).
R-513A is a zeotropic blend with temperature glide, so the chart has two columns: use the vapor (dew) column for superheat and the liquid (bubble) column for subcooling.
Vacuum readings are shown in inches of mercury (″ Hg) below atmospheric pressure.
| °F | °C | Liquid (bubble), psig | Vapor (dew), psig |
|---|---|---|---|
| -20 | -28.9 | 0.5 | 0.4 |
| -15 | -26.1 | 2.4 | 2.4 |
| -10 | -23.3 | 4.6 | 4.5 |
| -5 | -20.6 | 7.0 | 6.9 |
| 0 | -17.8 | 9.6 | 9.5 |
| 5 | -15.0 | 12.4 | 12.4 |
| 10 | -12.2 | 15.5 | 15.5 |
| 15 | -9.4 | 18.9 | 18.8 |
| 20 | -6.7 | 22.5 | 22.4 |
| 25 | -3.9 | 26.4 | 26.4 |
| 30 | -1.1 | 30.7 | 30.6 |
| 35 | 1.7 | 35.2 | 35.2 |
| 40 | 4.4 | 40.1 | 40.1 |
| 45 | 7.2 | 45.4 | 45.4 |
| 50 | 10.0 | 51.1 | 51.0 |
| 55 | 12.8 | 57.1 | 57.1 |
| 60 | 15.6 | 63.5 | 63.5 |
| 65 | 18.3 | 70.4 | 70.4 |
| 70 | 21.1 | 77.7 | 77.7 |
| 75 | 23.9 | 85.5 | 85.5 |
| 80 | 26.7 | 93.8 | 93.8 |
| 85 | 29.4 | 102.6 | 102.6 |
| 90 | 32.2 | 111.9 | 111.9 |
| 95 | 35.0 | 121.7 | 121.7 |
| 100 | 37.8 | 132.1 | 132.1 |
| 105 | 40.6 | 143.1 | 143.1 |
| 110 | 43.3 | 154.7 | 154.7 |
| 115 | 46.1 | 166.9 | 166.9 |
| 120 | 48.9 | 179.8 | 179.7 |
| 125 | 51.7 | 193.3 | 193.3 |
| 130 | 54.4 | 207.5 | 207.5 |
| 135 | 57.2 | 222.5 | 222.4 |
| 140 | 60.0 | 238.2 | 238.1 |
| 145 | 62.8 | 254.7 | 254.6 |
| 150 | 65.6 | 271.9 | 271.8 |
Source: Arkema Forane® Pressure Temperature Chart (PPC/SDC 05-2025). Reference only; verify against the equipment manufacturer's data.
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