well in mine way that won't be hot gas, but I think sth like 25C gas (near to ambient) - gas will be cooled by desuperheated and oilseparator (it's big and cooled by fan as You can see) .

Using MGV and controller is A LOT more complicated than just handvalve . Easier and another way for bypass is just using CPEV feeding evaporator with small amount of gas .

Patrick, please say more about mine painting work on pipes , becasue You've begin this topic .