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Old 10-02-2019, 10:19 AM   #1
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12V shower/sink pump

I will purchase a new 12v pump which supplies the shower and sink and am looking for suggestions. I currently have a Shurflo 4.0gpm, 60psi which draws 9 amps and is not enough for the shower. Any advice or suggestions is greatly appreciated.
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Old 10-02-2019, 10:26 AM   #2
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If that's not enough for the shower, it may be time to consider a different shower head and/or to check for anything that's restricting flow. My fresh water pump is only good for 3.5 gpm and the pressure switch cuts it off at 40 - 45 psi. And I rarely turn the shower on fully (and when I do, it's more than enough flow). IMO, more than that is a great way to chew up a lot of water very quickly, so I'd be cautious about going to a super high flow system.
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Old 10-02-2019, 10:30 AM   #3
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Have you tried opening and cleaning the pump you have to improve its function? Check the strainer?
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Old 10-02-2019, 10:53 AM   #4
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The 4gpm should be plenty for the shower and light use of another faucet.

I would check for restrictions before I replaced that pump.
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Old 10-02-2019, 11:03 AM   #5
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Clean the shower head. That’s a good size pump.
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Old 10-02-2019, 11:37 AM   #6
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Great suggestion, thank you!
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Old 10-02-2019, 01:11 PM   #7
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I think the current pump should be adequate but maybe there is a faucet that has debris or a restriction. I just replaced our galley sink faucet and the flow was severely restricted. Even though it was brand new the aerator either was plugged up when I got it or it plugged up very quickly. I cleaned it out and the flow was good.
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Old 10-02-2019, 01:59 PM   #8
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A wee tip.
To clean the shower head cheaply, put about half a pint of vinegar in a plastic bag, put the shower head in it and secure it tight with an elastic band making sure there's enough vinegar to completely immerse the shower head.
Leave overnight, remove the bag and put the vinegar in the toilet (it'll help to clean it too) turn on the shower, hey presto ! Clean shower head.
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