When I order the metal or plastic tubes for my Bostitch compressor, do the compression fittings come with them? Support October 03, 2020 18:20 No, in order to receive the compression fittings, you must order the elbows and unloader valves that the tubes attach to. These components will have new compression fittings and compression nuts which are included. Related articles How can I tell when my Bostitch tool was manufactured? Comments 0 comments Please sign in to leave a comment.