R236FA pressure temperature chart (PT)
An R236FA pressure temperature chart (PT chart) is a saturation lookup for R236FA: it relates temperature and saturation pressure when liquid and vapor coexist in equilibrium. This is useful for thermodynamic interpretation, but it is not a universal “normal running pressure” diagnostic chart.
Pressure basis: absolute vs gauge
The table below is absolute pressure (kPa(a), bar(a), psi(a)). Many gauges display gauge pressure (relative to ambient). Converting requires local atmospheric pressure:
Learn more: Gauge vs absolute pressure (psig vs psia).
Safety note
Refrigerants have safety classifications (toxicity/flammability) and their use is governed by codes and local regulations. This page is educational and provides property reference data only — always follow OEM procedures and applicable safety requirements.
R236FA saturation pressure vs temperature (reference table)
Generated using CoolProp (the same property engine used by FluidTool) at Q=0 saturation. Values are rounded for readability.
| T (°C) | T (°F) | Psat (kPa(a)) | Psat (bar(a)) | Psat (psi(a)) |
|---|---|---|---|---|
| -20 | -4 | 43.8 | 0.438 | 6.3 |
| -10 | 14 | 70.1 | 0.701 | 10.2 |
| 0 | 32 | 107.8 | 1.078 | 15.6 |
| 10 | 50 | 159.7 | 1.597 | 23.2 |
| 20 | 68 | 229.4 | 2.294 | 33.3 |
| 30 | 86 | 320.4 | 3.204 | 46.5 |
| 40 | 104 | 436.7 | 4.367 | 63.3 |
| 50 | 122 | 582.7 | 5.827 | 84.5 |
| 60 | 140 | 763.0 | 7.630 | 110.7 |
| 70 | 158 | 982.6 | 9.826 | 142.5 |
How to verify any row in FluidTool
- Open FluidTool with R236FA selected: /?fluid=R236FA
- Choose a Two-phase input pair (Temperature & Quality / T + Q).
- Set Q=0 and enter the temperature from the table to read Psat.
Related
- R236FA data sheet: basic identifiers and thermodynamic context.
- Refrigerant PT chart: what Tsat(P)/Psat(T) means and common pitfalls.
- Superheat & Subcooling: interpret measured line temperature vs saturation temperature.