ASHRAE A1·NEAR-AZEOTROPIC
R-507A Pressure-Temperature Chart
R-125 / R-143a (50% / 50% by mass). Standard saturation pressures across evaporator, suction, and condensing temperatures.
Single Saturation Curve
R-507A is an azeotropic blend (R-125 / R-143a 50/50%) with zero glide. Saturation pressure is identical for liquid (bubble) and vapour (dew) phases, and a single saturation column is used.
Sea-Level Pressure Standard
psig = psia − 14.696 (standard atmospheric pressure at sea level). At higher elevations, adjust gauge manifold readings accordingly.
Saturation data: Honeywell Genetron AZ-50 published properties.
Reference only. Follow the equipment manufacturer's charging instructions and data plate.Temp:
Pressure:
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SH / SC Calculator
Calculate superheat and subcooling for R-507A, R-32, and R-410A.