Hydraulic Proportional Valve

Hydraulic Power Unit Engineer

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It can be argued that a proportional valve is any valve that can vary its spool or poppet position infinitely between discrete positions, (i.e. anywhere between fully open and fully closed).

If you are looking for more details, kindly visit hydraulic proportional valves.

For example, if you apply this definition, a relief valve would be a proportional valve. The poppet can crack to any position; not just fully open or fully closed.

The most commonly understood example is a directional control valve that can exert fine control over the extend and retract speed of a cylinder.

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