When recovering refrigerant the standard method is to invert the recovery cylinder and hook to the vapor port. I’ve heard this is because you want liquid refrigerant to meet liquid refrigerant already in the cylinder to help keep the refrigerant cool. If this is the case then why not keep the cylinder upright and hook to the liquid port that has a dip tube, liquid would still be flowing into liquid. I’m a student with no field experience and would love to hear input from professionals. Is that even why you invert the recovery cylinder?