Cross Section of the nozzle

If you’re in need of a nozzle for doing DO-160 10.2 water ingress testing, and happen to own a 3D printer, then you’re in luck! I can’t reproduce the drawing it was from here for obvious reasons but it’s figure 10-2 if you’re interested.

The nozzle fits straight to a standard garden hose, but you might want to use a jubilee clamp just to be safe (although fits very nicely I must say).

When I printed the first revision of this nozzle I had the front section modelled in reverse which made for a rather amusing spray pattern, opposed to the turbulent slosh of water it’s supposed to produce.

It’s easy enough to calibrate if you trust your mains water pressure to remain vaguely constant. Just measure the output through the nozzle into a bucket on some scales over a minute and voila!: kilos per minute ~= liters per minute.

Here’s the files for the complete model:

I’ve had some success printing it in a single piece, but the necessary support tends to mess up the front face of it so I prefer to print it in two parts with no support and glue together later.

Please see the finished files on thingiverse:

Obviously I imply no guarantee or warranty on the above, but feel free to credit and use at your own risk.