Solenoid valve - Electrovalve

This is a prototipe not yet testet, so print it under your own risk. Would be great if you let me know if it really works though.
In order to make this you will need the following stuff:
-4 M3 or M4 screws 30mm long
-4 M3 or M4 nuts
-Enameled copper wire, to do the solenoid. Wont work if the wire is no enameled.
-a 6mm diameter and 20mm long IRON or STEEL cilinder. Won't work if is nof iron or steel.
-a 5mm diameter spring, not to strong but no to weak, I dont kwnow the exact force it had to have, so you will have to find out by trial and error.
There are two pieces that are intended to print in some flexible plastic, becouse it design to use some of the rubber properties. The two pieces are the ones called: "EV - Membrana polimérica" and "EV - Punta de caucho de pistón"
The rest of the parts can be printed of any waterproof material you like.
I recomen use 0.12mm resolution, becouse of the screw thread.
Cheers and good luck!