What is a disadvantage of typical valve systems without gears?

The reason that requiring more than one person to operate is identified as a disadvantage of typical valve systems without gears lies in the operational dynamics and mechanical advantage that geared systems provide.

In valve operation, particularly in larger or more complex systems, the effort needed to open or close a valve can be significant. Without gears, the operator must exert greater physical force directly on the valve stem or handle. This can make manual operation challenging, especially when dealing with high-pressure or large-diameter valves, where significant torque is needed. In such cases, it may be necessary to have more than one individual working together to manipulate the valve safely and effectively.

Gears provide a mechanical advantage that allows a single operator to control a valve with less effort. This makes geared systems more efficient and user-friendly, reducing the need for additional personnel. Thus, the requirement for multiple operators for non-geared systems represents a practical limitation, especially in industrial or high-stakes environments where efficiency and safety are paramount.

The other options all touch on different aspects of valve operation. The inability to be remotely operated typically pertains to specific valve designs and does not apply universally to all non-geared systems. Reliability in high-pressure situations can vary widely based on the construction and materials of the valve, rather