Supply Pipe Fittings, Part Two: SPECIALTY FITTINGS - FUNCTIONAL COMBINATIONS
Similarly, with the union function, you have union elbows and union tees. There are unions with one male connection and one female. And there are elbows and return bends with side outlets (the tee function). If there is a need to combine functions into a single fitting, chances are that somebody, somewhere, makes exactly what you need. Check it out. (Note: Not all of the specialty fitting configurations are available for all piping material systems. The examples just given relate primarily to the metal options.)