REFRIGERANT • PT DATA v1

R-431A

PT data, curve stats, and quick routes into the field calculators. Data shown here is derived from the versioned PT asset set under /assets/pt/v1.

RefrigerantsLearnDownload JSON

At a glance

SAFETY • A3
CURVE • bubble
POINTS • 443
GWP
38.3
ODP
Curves available
Dew + Bubble
Pressure range (psig)
-14.69 to 596.06
Temperature range (°F)
-257 to 197
Note: PT points are stored in psig and °F. For blends, bubble and dew represent different saturation states. Always follow OEM charging procedures.

Quick actions

These routes are designed to be technician-friendly: minimal taps, prefilled context, and predictable URLs for bookmarks and sharing.

Open PT Chart
Fast lookup (pressure ↔ temp)
Open →
Browse Equipment
See equipment using this refrigerant
Open →
Superheat/Subcool
Preselect this refrigerant
Open →
Charge Calculator
Line set adjustments
Open →
Curve toggle
AutoDewBubble
Tip: For blends, evaporator saturation is typically based on dew, and condenser saturation is typically based on bubble.

Pressure → Saturation temperature (quick)

Linear interpolation between nearest points. Out-of-range values show “—”.

Pressure (psig)Sat Temp (°F)Source
0-45.8linear
25-1.2linear
5024.9linear
7544.2linear
10059.9linear
15084.8linear
200104.6linear
250121.3linear
300135.8linear
350148.6linear
400160.2linear
450170.8linear
Do a lookup in PT Chart →

Temperature → Saturation pressure (quick)

Useful for “I have a target saturation temp—what pressure should I see?” checks.

Temp (°F)Sat Pressure (psig)Source
-402.2exact
-2012.1exact
025.9exact
2044.6exact
4069exact
60100.2exact
80139.3exact
100187.5exact
120245.8exact
140315.8exact
Use this in Superheat/Subcool →

Data source & notes

PT asset ID
r431a
Original name
R-431A
CAS
—
Units
psig / F (atm: 14.6959 psi)
Default curve
dew
PT index version
v1(from /assets/pt/v1/index.json)
Safety note: PT lookups are a foundational building block for charging and diagnostics, but they do not replace OEM procedures or full system context.