gravity water valve

a simple water valve which works with a pump, it stops the water from flowing because of gravity when the pump is not working, I'm using it for my flowers when i'm on holiday (with an arduino).
Just print the 2 parts, insert a steel ball (10-12.5mm) between the pieces and connect the hose.
I printed with 0.8 nozzle so there was a bit of leakage that's why I added some tape