VEVOR 3/4HP refrigerant recovery machine is perfect for recovering refrigerants III, IV, and V. It's safe to recycle flammable refrigerant R22. Self-cleaning without Residue: After each use, simply turn the knob to the PURGE position.
We needed it to pull 18 lbs of R22 out of our home's AC System and it worked very well.
Two things we learned:
1) Use the RECOVER FAST position, or you'll be there too long.
2) SPRAY WATER on the Tank that this VEVOR Machine is sending the R22 too.
The Tank will get too hot and create pressure/opposition to the VEVOR Machine IF you don't cool the Tank by spraying water on it, during Recovery.
It's a very good and solid, quality built Recovery Unit!