Can't you manually release the air from the glass cylinder? Mine has a release valve below it, similar to that in the photo you posted. If you can push that in, it will release the condensation.
Not sure about that orange colour though, one of the more expert guys can probably help there.
Re the sputtering, is it continuous? Mine does that occasionally, usually when there's a small obstruction in the nozzle. Don't know how well or often you clean your airbrush, but if you give the nozzle and pin a good cleanup with Nitro thinners it should solve the sputtering.