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Thread: Water Pressure

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    Water Pressure

    I bought a 5 stage 2 x 75 gph system from you a few years ago. I am completely happy with it. The water pressure gauge is reading 30 psi. I can't remember it being that low before. What is a good to decent pressure?

    Mario
    I never dreamed of being a father............Now I can't imagine being anything else.

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    BOD MEMBER steveb's Avatar
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    I have always run 90-100 psi at the ro membrane using a booster pump.

    Without a booster pump probably 30-45 psi is what to expect.
    Last edited by steveb; 02-19-2018 at 11:17 AM.

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    flow is being slowed and needs filter changes, you may also need a booster pump with a 5 stage system
    David
    M.A.R.S.H. - Vice President
    Marine Aquarium and Reef Society of Houston

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    The filters are relatively new and clean.

    Do booster pumps really help?
    I never dreamed of being a father............Now I can't imagine being anything else.

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    BOD MEMBER steveb's Avatar
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    Quote Originally Posted by malira View Post
    Do booster pumps really help?
    oh yeah.. not only with gpd production but rejection rate.


    this is how mine is setup..

    unfiltered water->sediment->carbon->chloramine->booster->ro->di->di

    or maybe

    unfiltered water->sediment->chloramine->carbon->booster->ro->di->di

    I would have to look this evening at the two carbon filters to get the correct order.
    Last edited by steveb; 02-19-2018 at 12:19 PM.

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    Secretary Cody's Avatar
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    If you're running that low of psi then the membrane is probably wasting a lot more water than it should. Each membrane has a minimum pressure for them to opporate correctly, and most are around 50 psi.

    I have dual 150 gpd membranes and without my booster, I'm at 60 psi. That puts me at about 6 or 7 minutes per gallon. When I turn on my booster, I hit 85-90 psi and it takes 4 minutes per gallon. So at the elevated pressure, I'm making roughly 360 gpd. I didn't mention reject water because even without the pump, my membranes get enough pressure to at least opporate correctly.

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    MARSH Sponsor Buckeye Hydro's Avatar
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    At 30 psi... something is wrong, and your system will not work worth a darn. Filmtec 75's are factory spec'ed at 50 psi, and they'll work reasonably well down to about 40 psi.

    You need higher pressure. Your issue could be a number of things: clogged prefilters, open flush valve, failing tap into your home's plumbing, etc.

    Maybe you want to give us a call when you are in front of your system?

    Russ
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    RO and RODI Systems and Supplies
    www.BuckeyeHydro.com
    Info@BuckeyeHydro.com
    513-312-2343

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    Quote Originally Posted by Buckeye Hydro View Post
    At 30 psi... something is wrong, and your system will not work worth a darn. Filmtec 75's are factory spec'ed at 50 psi, and they'll work reasonably well down to about 40 psi.

    You need higher pressure. Your issue could be a number of things: clogged prefilters, open flush valve, failing tap into your home's plumbing, etc.

    Maybe you want to give us a call when you are in front of your system?

    Russ
    513-312-2343
    Thank you. I will look at your suggestions when I get home this afternoon. If I cannot get the pressure up I will give you a call.
    I never dreamed of being a father............Now I can't imagine being anything else.

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