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 ...

Popular Mechanics’s automotive experts outline the tools and techniques proven to smoke out even the toughest to find vacuum ...

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 ...

ball valves, butterfly valves, etc. Each has its specialty, so knowing your options is key. Material matters: Consider the materials the valve is made of. It should be compatible with the type of ...