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Old May 18th, 2015, 06:51 PM
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Default RO Pump Replacement Question

My RO system operates using a Procon pump. This is a rotary vane pump that does NOT warm the sap when pressurizing. When the sap is cold I'm only able to get 3/4 gal/ min of permeate. When I ran warm sap ( 50 degrees ) it increased to over 2 gal/min. The motor on the Procon went out at the end of the season and I'm looking to upgrade to a multistate pump. For you folks running (1-2) 4x40 post I'd like to know the make/model and motor hp you are using?

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Old May 19th, 2015, 08:13 AM
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For just a single 4x40, you can use goulds 7gbs10fs ( 7 gpm 1.0 hp) for 2 you will need a larger pump.(1.5 hp and maybe 10 gpm ) how big is your feed pump?

Also, these wont heat the sap to a point it will make a difference running through the membrane, unless you are recirculating a very small amount for hours.

For a wash, it would take 1.5 hours to get 5 gal of wash water from 45 deg to 110 deg.
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