To help build out a working filtration system, [Fab] needed some valves, so set about printing some of his own. [Fab] went with a simple butterfly valve design, similar to the throttle valve in ...

The treatment plant is set to be offline for a week for the installation of a butterfly valve at a raw water pipeline.

A throttle body is an electronically or mechanically controlled butterfly valve that controls the amount of air entering the ...

Figure 1 shows how this can be done. A butterfly valve has a hollow stem conducting outside air into a number of small holes and dispersing the air into the water. This can only be done if the vapor ...