Ball valves are useful and used for a very wide range of needs. They can also come in all shapes and sizes, from as small to a few millimeters to as large as a few meters.

A ball valve is a quarter-turn valve that uses a ball with a hole drilled through it to control the flow of media. The hole is referred to as the port or orifice, and when opened, it aligns with ...

Newer, computer-controlled EGR valves can do the same if the computer or motor that opens and closes the valve doesn’t work the way it’s supposed to. More From Cars.com: ...