Correct option is A
A
rolling lever valve is specifically designed to avoid overlapping signals in pneumatic systems. It ensures the proper sequencing and functioning of pneumatic components by providing precise control over when signals are generated. The rolling lever valve ensures that signals are not prematurely or simultaneously triggered, thus eliminating overlapping.
In pneumatic systems, overlapping signals can cause malfunctions, such as improper sequencing or simultaneous activation of actuators, which can lead to reduced efficiency or failure of the system.
An idle roller is a mechanical component typically used in conveyor systems to support or guide a belt. It has no function in preventing signal overlap in pneumatic systems.
A lever valve is a manual directional control valve actuated by a lever. While it provides directional control, it does not inherently address the issue of overlapping signals.
