A True TUC is an extremely small undercounter unit, I bet that would be a challenge to install a TXV in there.
I'm curious, do you ever run into design issues converting to TXV's? Like compressor starting issues, since no equalization of pressure during off cycles? Or do you ever get condensing units getting overloaded because the TXV will allow more flow than the cap tube did, especially on freezers?
And do you install receivers & sightglasses on ever conversion you do? Or just oversized drier?
This does seem extreme, and its a major modification to the original design of the equipment. Although I'm not necessarily opposed to it, I just haven't ever done it before because "resdesign" is forbidden at my company, too many potential liabilities if things don't work out right, I guess.
Curious as to how your company typically does this. It does seem convenient, since you could always have a Sporlan Q valve kit on your truck, whereas you can't possibly stock every cap tube replacement.