Valve for fitting onto pump end. This fits the Liquid Force Maxflow system. Just print, and use on your pump hose directly! After a few iterations i've found a good fit, so there is no need for any after treatment.
The small extruded pieces can be cut with a knife, as they can be difficult to print out without error, and might be too big.
This can be printed without support on most systems. I recommend ABS since it has good brigding capacity and also some flex to it (compared with PLA).
Enjoy & Feel free to share!