What types of valves are opened or closed by rotating a handle a quarter turn?

The correct answer is related to the unique operation of butterfly valves, which are designed to be opened or closed by rotating a handle only a quarter turn. This design allows for quick and efficient control of flow in piping systems. When the handle is rotated, a disc within the valve rotates about a central axis, either aligning with or perpendicular to the flow path, thereby allowing or blocking the passage of fluid.

Butterfly valves are often favored in applications where space is limited and rapid operation is necessary, such as in fire protection systems. Their design makes them easy to install and maintain, providing reliable performance in controlling flow. The simplicity of their operation contributes to their widespread use.

In contrast to butterfly valves, gate valves require multiple turns to completely open or close, making them slower to operate. Check valves are designed to prevent backflow and do not have a mechanism for manual operation like the other valves. Ball valves do also operate with a quarter turn for full open or close but are distinct from butterfly valves in their internal design and flow characteristics.