For R-410A, a working pressure capability of at least 400 psi is recommended (this includes recovery cylinders). Standard DOT recovery cylinders rated for 350 psi should not be used.Click to see full answer. Then, what should the high and low side pressures be?The low-side should be near 30 PSI at 90 degrees Fahrenheit or less. Pressure that is too much lower or higher shows there is a problem. On a properly working system, high-side pressure will be about twice the ambient temperature, plus 50 PSI.Additionally, what is the pressure of r410a at 72 degrees Fahrenheit? R-410A Pressure Temperature Chart PSIG(Pounds per Square Inch Gauge) R-410A (HFC) °Fahrenheit 72 16 74 17 76 19 78 20 Regarding this, what should my refrigerant pressures be? Example R-134A Refrigerant Temperature vs Pressure Data Ambient Temperature in °F1 R134A Vapor Pressure at Sea Level R-134A High Side Pressure3 65.71°F (18°C) 65 psig 135-155 psi / 931-1069 kPa 69.24°F (21°C) 70 psig 145-160 psi / 1000-1103 kPa 75.86°F (24°C) 80 psig 150-170 psi / 1034-1172 kPa What should the high and low side pressures be for 410a?Manifold sets should be at 750 psi (high side) and 200 psi (low side), with a 500-psi low-side retard. Use hoses with a 750-psi service pressure rating. Leak detectors should be of the HFC type. R-410A is compatible with POE oils.