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what pump should i look into  RSS feed

 
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New to all this but currently trying to set up a Rainwater Harvesting system for whole house use (except drinking). Looking into strong enough pump that will push water thru the filters and end up at around 5 - 6 Gpm inside at maybe/hopefully 40 PSI. Will tie pump, UV and solenoids to solar.  
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Location: Bendigo , Australia
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There are a number of factors you need to consider first.
Filters
- maybe run a series of larger to smaller filter medium so the filter does not block too quickly
- aim at large surface area filters to ease the effort required to push water through
- Consider disc filters which can be cleaned against cartridge filters which cannot.
Water flow
- check 5 to 6 gals per minute is what you need
- check 40 psi is needed.
Flow and pressure are linked.

A larger filter will make it esier to get a higher flow and pressure at the taps.

Each pump manufacture has charts which will show you the capacity of each pump and the operating pressure.
I am not sure if you will be able to get cahrts for filters that detail the pressure drop across the range of water volume through the filter, but look for them.
 
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Location: On a Farm
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We have a flo-jet pump that we got on Amazon that we love. That thing pushes water like mad.
 
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