R-507A Refrigerant Mainframe: Properties, Pressure Charts, and Sizing Metrics

The Industrial Choice for Heavy-Duty Low Temperature Chilling

R-507A (commercially branded as Genetron AZ-50) is an azeotropic HFC blend widely specified for low-temperature industrial blast rooms, ice rinks, and food manufacturing plants requiring rapid product pull-down.

In this data guide, we map the R-507A Saturation Pressures and Sizing Parameters. Prime Cool implements these profiles across massive MIDC cooling installations.

Chemical Architecture of R-507A

• Composition Split: R-125 / R-143a (Exact 50% / 50% azeotropic mass balance grid)
• Zero Temperature Glide: Because it is a true azeotrope, vapor and liquid curves match perfectly. R-507A experiences 0°C glide, preventing fractionation issues.
• Global Warming Potential (GWP): 3,985

Quick-Reference R-507A P-T Data Sheet

Saturation Temp (°C)	Liquid Pressure (psig)	Pressure (bar g)
−40°C	5.5 psig	0.38 bar
−30°C	15.2 psig	1.05 bar
−20°C	28.2 psig	1.94 bar
−10°C	45.1 psig	3.11 bar
0°C	66.5 psig	4.58 bar
45°C (Indian Condensing Peak)	283.4 psig	19.54 bar

Field Maintenance Rules

While R-507A exhibits no glide, standard best practices dictate charging from the cylinder's liquid valve into the high side during initial commissioning. Ensure the oil reservoir contains synthetic Polyolester (POE) fluid to guarantee proper lubrication and oil return across low evaporator lines.

Maintain maximum chilling performance. Book a heavy low-temp system service with Prime Cool.