[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.

GF Piping Systems developed the Butterfly 565 Lug-Style, which can be used as an end valve, allowing piping systems to be ...

[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.

The effect is twofold. First, the small holes increase the Xfz factor, and second, the resulting small jets create only localized cavitation. The drawback is that this is an expensive solution and ...