I am assuming that you are ...

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I am assuming that you are cleaning each stage independently at low pressure.

I would target flow to maintain a minimum of 40 gpm crossflow.  To put it another way, there should be 40 gpm off of each housing, with no production of permeate.  

So, if you have 10 housings, It would be 400 gpm at a pressure high-enough to get the flow you need, but low enough not to produce permeate.

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Dear Davd,

Is it better to consider 2 CIP pumps and wash second stage by just 1 pump and for fist stage by 2 pumps?

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