134a expansion valve question

what will be the outcome if an 134a expansion valve had been used to a r22 refrigeration system?

thanks!

Nice intro.
Why, have you tried this or was the right valve not in stock?:D :p

The outcome would be that compressor woud be unhapy and close to death.

Dont try that,
Renato

The valve doesn't really differentiate between refrigerants. But a particular valve will be rated at different tonnages or capacities that are tested by the manufacturer. For example, a 1 ton valve with R22 might become a 1/2 ton valve with R134a. R22 removes a lot more heat as one pound boils, compared to 134a. Thus, a one-ton R22 valve will have a smaller orifice than a one-ton 134a valve. Depending on the particular circumstance, you could likely wind up with an oversized valve, by at least 33%.

But the power head DOES differentiate between refrigerants. And the power head will not exert sufficient pressure to operate correctly. You have a chance of changing powerheads to make the oversized valve work properly, depending upon the valve's original range (for example, you are working with an already-undersized 134a valve), but a small chance of making it work with a 134a powerhead.

Oh! Your original question just came back into mind.


"what will be the outcome if an 134a expansion valve had been used to a r22 refrigeration system?"


You will overfeed liquid to the compressor.