I want to use a pump that has a flow rate of 800L/h, instead of several mini pumps.
I wonder if there is an electric valve with several ways that I could control with a raspberry pi, choosing which way to water or choosing not to water anything. For each way there would be several plants that would be watered.
I am interested if you know if this exists and I am also interested if you have other ideas for doing this. I am available for more information.
Most valves will only have a maximum of 2 outlets. As mentioned above, the easiest way to accomplish what you want to do is by using several single outlet valves attached to a manifold which is fed by your single pump. This is how most irrigation systems are designed.