What are the typical pressure and temperature values of refrigerant on the high-side and low-side of the metering valve?

In a typical refrigeration system, the pressures and temperatures across the metering valve play a crucial role in understanding its operation. The chosen answer provides values that are consistent with what is expected in a properly functioning refrigeration cycle.

The high-side pressure, listed as 225 PSI, aligns well with common refrigerant pressures during operation. Typically, in a refrigeration system using R-134a or R-410A, high-side pressures can range significantly based on the system configuration and ambient conditions, often being in the range of 200-300 PSI under standard operating conditions. The accompanying temperature of 110 degrees Fahrenheit is also reasonable, as it indicates the necessary thermal conditions for the refrigerant to be effectively condensed.

On the low side, a pressure of 70 PSI reflects a reasonable range for many systems, especially when considering a properly functioning evaporator. This is generally below 100 PSI, common for the low side, where the refrigerant evaporates to absorb heat. The 40 degrees Fahrenheit temperature further supports this, as it implies a state conducive to heat absorption, which is essential in the cooling phase of the refrigeration cycle.

These specified values demonstrate an understanding of the operational range that can be expected in common refrigeration applications, reinforcing the validity of this answer in