R1234ze(Z) pressure temperature chart (PT)
R1234ze(Z) saturation pressure vs temperature (PT chart): a CoolProp-generated reference table in kPa(a), bar(a), and psi(a), plus safe interpretation notes (not diagnostic targets).
An R1234ze(Z) pressure temperature chart (PT chart) is a saturation lookup for R1234ze(Z): 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:
Pabs = Pgauge + Patm
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.
R1234ze(Z) 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 ( deg C) | T ( deg F) | Psat (kPa(a)) | Psat (bar(a)) | Psat (psi(a)) |
|---|---|---|---|---|
| 0 | 32 | 68.3 | 0.683 | 9.9 |
| 10 | 50 | 102.4 | 1.024 | 14.9 |
| 20 | 68 | 148.8 | 1.488 | 21.6 |
| 30 | 86 | 210.3 | 2.103 | 30.5 |
| 40 | 104 | 289.9 | 2.899 | 42.0 |
| 50 | 122 | 390.9 | 3.909 | 56.7 |
| 60 | 140 | 516.9 | 5.169 | 75.0 |
| 70 | 158 | 671.7 | 6.717 | 97.4 |
How to verify any row in FluidTool
- Open FluidTool with R1234ze(Z) selected: /?fluid=R1234ze(Z)
- Choose a Two-phase input pair (Temperature & Quality / T + Q).
- Set Q=0 and enter the temperature from the table to read Psat.
Related
- R1234ze(Z) 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.
- Back to Wiki
- Open the tool
R1234ze(E) pressure temperature chart (PT)
R1234ze(E) saturation pressure vs temperature (PT chart): a CoolProp-generated reference table in kPa(a), bar(a), and psi(a), plus safe interpretation notes (not diagnostic targets).
R1336mzz(E) pressure temperature chart (PT)
R1336mzz(E) saturation pressure vs temperature (PT chart): a CoolProp-generated reference table in kPa(a), bar(a), and psi(a), plus safe interpretation notes (not diagnostic targets).