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flow restrictor

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  1. Squeegee Dan

    What flow restrict or should I have???

    Hi all, I recently upgraded my ro to a 300gpd system by adding another membrane to the unit. And wanted to know of I need to change the flow restrictor. My pressure is around 4.5bar and tds before the unit is around 50-60. Oh ... and there is a 550 flow restrict or on there at the moment...
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