Do proportional and servo valves have an infinite number of positions available when shifting the spool?

Proportional and servo valves are designed to provide control over fluid flow based on the input signal, allowing for precise positioning. Unlike standard on/off valves, which only have fully open or fully closed positions, these types of valves can modulate flow rates and output pressure within a range.

This means they can effectively achieve an infinite number of positions when shifting the spool, as the valve can adjust its flow to various degrees depending on the command signal received. This ability to vary the position continuously, rather than in distinct steps, is what distinguishes proportional and servo valves from other types of valves. The technology used in these valves facilitates smooth and exact movements, making them ideal for applications requiring fine control.

In contrast, other types of valves may have limited positions or fixed states, which would not allow for the same level of versatility. Therefore, the assertion that proportional and servo valves have an infinite number of positions available when shifting the spool is accurate based on the operational principles of these devices.