if approved by the compressor manufacturer, then yes, if not, then no...
R22
No.
R22 gauges are designed for use with R22 refrigerant, and while they can technically be used to read the pressure of R416A, the accuracy may not be reliable. R416A has different pressure-temperature characteristics compared to R22, so using R22 gauges could lead to misinterpretation of the readings and potentially improper servicing. It's advisable to use gauges specifically designed for the refrigerant in use to ensure accurate measurements.
R22
No, refrigerant R22 and R134A should not be mixed. R22 is a hydrochlorofluorocarbon (HCFC) refrigerant, while R134A is a hydrofluorocarbon (HFC). Mixing them can lead to improper system performance, potential damage to the compressor, and can also affect the efficiency of the cooling process. It's important to use the correct refrigerant specified for the system to ensure optimal operation and compliance with environmental regulations.
R22
No, because R22 is a 'harmless' gas. Just observe the material safety data sheet (msds) and keep it on hand.
After 1992- r134A Before 1992- R22 but it need to be retrofitted for R134 if it hasn't been done already. It is ILLEGAL to use R22 in autos.
r22
R22 r123
R22
Mixing R22 refrigerant with R438A is not recommended. R438A is a replacement for R22, but it has a different composition and properties. Mixing refrigerants can lead to reduced efficiency, potential equipment damage, and difficulty in servicing the system. It's best to fully evacuate the system and charge it with the appropriate refrigerant.