Three-position pneumatic valves include a variant described as detented and the other is which?

Three-position pneumatic valves include a variant described as detented and the other is which?

• A. Detented
• B. Two-position spring return
• C. Three-position detented and two-position spring return
• D. Proportional

Answer: (C)

In pneumatics, valves with three positions are typically offered with two main actuation styles: detented and spring-return. A detented valve uses mechanical detents to “lock” into the left or right position, holding that state without continuous actuation. The other common style is a spring-return arrangement, where the valve is driven to an outer position and then springs push it back to a default position when actuation is released. The best choice reflects these two common variants together: three-position detented and two-position spring return. This pairing shows the two main ways the valve can be actuated and returned, whereas the other options describe either just one variant, a valve with only two positions, or a different control type (proportional), which isn’t the focus here.

In pneumatics, valves with three positions are typically offered with two main actuation styles: detented and spring-return. A detented valve uses mechanical detents to “lock” into the left or right position, holding that state without continuous actuation. The other common style is a spring-return arrangement, where the valve is driven to an outer position and then springs push it back to a default position when actuation is released. The best choice reflects these two common variants together: three-position detented and two-position spring return. This pairing shows the two main ways the valve can be actuated and returned, whereas the other options describe either just one variant, a valve with only two positions, or a different control type (proportional), which isn’t the focus here.