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Why low pneumatic pressure can operate high line pressure control valve?
Wiki User
∙ 13y ago
This indeed harks back to the origin of the word "valve".
A traditional (water) valve may be operated by the application of a few pounds of force, but may control the flow of thousands of pounds of fluid.
[Which is why by analogy, thermionic amplifiers were called valves.]
Similarly with pneumatic control valves, where a signal of a few pounds on a control piston will produce an actuating force of many hundreds of pounds.
Wiki User
∙ 13y ago
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