Thanks for the help btw 🙂

Thanks, i see what you mean now. Would another valve like the one below work with my setup? My power adapter supports 12v so that is no problem.

https://www.kiwi-electronics.com/en/plastic-water-solenoid-valve-12v-1-2quot-nominal-2624?search=valve

But if I connect it to the 5v power supply directly it will destroy the coil according to the specs https://www.tinytronics.nl/en/mechanics-and-actuators/solenoids/solenoid-valves/solenoid-valve-latching-5v-brass-g1-2

No, the diode was not tested with the led but with the voltage meter on diode mode, I verified the diode works (I even flipped the diode for testing).

I tested the solenoid by setting the multimeter to resistance and connect the testing probes to the solenoid