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Thread: RO/DI unit pressure. Urgent help needed

  1. Thu, 22nd Dec 2011, 04:35 PM #1
    polarbear
    polarbear is offline Web Member
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    Default RO/DI unit pressure. Urgent help needed

    So Im making RO/DI water and I went out to check on the unit and noticed that the water pressure on the gage is reading 85 psi. It's never gotten over 70 psi so i am worried that it might spring a leak because of all of the pressure. Should I be worried? I am not running a boosting pump either.
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  2. Thu, 22nd Dec 2011, 04:50 PM #2
    Mike
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    Yikes, our pressure stays about 50. Any idea what would cause the change in pressure? Sorry not much help beyond that.
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  3. Thu, 22nd Dec 2011, 05:02 PM #3
    polarbear
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    Well it's a new home and we have always had good pressure. I checked it again and it's at 75 now so it hasn't continued to rise. I'll keep an eye on it. Thanks.
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  4. Thu, 22nd Dec 2011, 05:12 PM #4
    ErikH
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    Turn it down to 60 PSI. I believe your RO membrane may only be rated for that. Higher could destroy the membrane.
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  5. Thu, 22nd Dec 2011, 07:54 PM #5
    Big_Pun
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    90psi is ideal I believe I wouldn't worry... just check rejection rate if it's still 97% + I wouldn't worry
    looks like max is 150psi
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