[Fab] went with a simple butterfly valve design, similar to the throttle valve in most gasoline-powered cars. The butterfly vane rotates to vary the flow, turned by a small SG90 servo. A Wemos D1 ...

Quite often, butterfly valves are used especially in larger sizes due to lower cost. To reduce the tendency to cavitate in such valves, companies employ proprietary vane designs. Figure 2 shows such a ...

[Fab] went with a simple butterfly valve design, similar to the throttle valve in most gasoline-powered cars. The butterfly vane rotates to vary the flow, turned by a small SG90 servo. A Wemos D1 ...