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Can you tell me exactly what is the variation of pressure and flow when the water passes from one screen to the other.

How the flow changes and why is it required.

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This site is not at all a way to directly address the inventor or patent owner. In any case there is no patent number in the question. –  George White May 19 at 15:18

1 Answer 1

This is a pretty straightforward problem in fluid mechanics. It's also straightforward to set it up and measure.

Why do you ask?

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