What is the difference between a servo valve and a proportional valve?

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Accepted Answer

A servo valve is used for precise control of flow rate, while a proportional valve is used for controlling the flow rate proportionally to the input signal.

Servo valves are typically used in applications where precise control of flow rate is required, such as in aerospace or industrial automation.
Proportional valves are used to control the flow rate proportionally to the input signal, making them suitable for applications like hydraulic systems in construction equipment.
Servo valves have a closed-loop control system that continuously monitors and adjusts the valve position to maintain the desired flow rate, while proportional valves operate based on the input signal without feedback control.
Examples of servo valves include Moog G631 series, while examples of proportional valves include Parker D1FP series.

What is the difference between a servo valve and a proportional valve?

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