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Thread: Cracked Filter head repair on EC 75A

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    Cracked Filter head repair on EC 75A

    The Filter head {Dome Lid} on my Hayward Perflex EC 75 has a tiny hairline crack about an inch long that emits a continuous drip. I would think it could be fixed but would like to know what sealant is recomended for this repair.

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    Join Date
    May 2007
    South Central NJ

    Re: Cracked Filter head repair on EC 75A

    I suspect, as you do, you will need a new lid. Where on the lid is it cracked?

    Owner of - PoolGuyNJ LLC
    Expert Pool and Spa Repairs, Renovations, and Augmentation. Helping people decide what is the right gear for meeting their needs. Expectations Set, Expectations Met, No Surprises.

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    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: Cracked Filter head repair on EC 75A

    I agree trying to patch any type of cracked pressure vessel is almost always a bad idea.
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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    In the Industry

    Join Date
    Jul 2011
    Myrtle Beach, SC aka Redneck Riveria

    Re: Cracked Filter head repair on EC 75A

    Definitively not a good idea. Filters expand with pressure and contract when the pump is off. I'm unaware of any adhesive that is water tight and does that and still is able to substain 10-30 psi.
    "When your pool is sick, call the doctor, I make house calls"
    One stop pool shop, I do everything but install them. 9+ years of experience.

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    techguy's Avatar
    Join Date
    Jul 2010
    Antelope, CA

    Re: Cracked Filter head repair on EC 75A

    Do you a photo of the crack? Just making sure I understand where exactly your crack is.
    -- Guy --
    10K gallons in 21' Round 52 inch wall Aqualeader AG, Hayward Power Flow LX 1.5 HP pump motor, Hayward Perflex EC50AC DE filter w/Cellulose, Wide mouth skimmer, 2013 new Diver Dan (craigslist) to replace the faded old Hayward AquaBug. TF-100

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    Re: Cracked Filter head repair on EC 75A

    The crack is located about two inches above the lip that the cover seats on. It is too small to capture in a photo, I have to keep wiping it with a cloth to see where it is. It is solid all the way around it. It seems strange that it would crack like that (filter is three years old) Hayward has suggested a marine epoxy. If some of the pipe dopes work on the inside of a 110 PSI pipe that carrys both hot and cold water (subject to expansion and contraction in combination with the pressure) it seems in theory that it would work. I was hoping someone had already been through the trial and error phase. Thanks folks for you responses and any further suggestions.

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    Join Date
    Jun 2007
    Poughquag, NY

    Re: Cracked Filter head repair on EC 75A

    One thing you might try is MarineTex. The stuff is awesome for fiberglass and other repairs. I don't think it will add any strength to the area of the crack, but it probably will seal the leak.
    20 x 40 vinyl IG. SWG. Solar. Ikeric VS pump.

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    Re: Cracked Filter head repair on EC 75A

    Thank you for all the responses. Upon researching some suggestions I found that Marine Tex flex would be most likely to satisfy the requirements. With more thought I decided to do it the best way and replace the Hayward top. Interesting though, I found that there are other manufacturers now making generic Hayward parts at much reduced prices.

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