This is a y adaptor designed in openscad so you can easily modify to your own needs. I designed this for a mate who needed this for his shop vacuum. Have not printed it myself yet. If you are going to print, check the layers after slicing at the y-junction so you know it's the way you want it.
Vacuum_hose_Y-splitter.scad | 635.0B | |
Vacuum_hose_Y-splitter.stl | 425.5KB |