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Thread: Hayward DE Locknut

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    Hayward DE Locknut

    Hello,
    I have a Hayward DE6000 filter with a Hayward Selecta-Flo Valve SP740DE. My problem is that the lock nuts connecting the two have cracked. Due to the flair union on the pipes coming out of the Selecta-Flo am unable to put a new one on. Is there a way around this without having to replace the entire Selecta-Flo Valve? Severall of my local pool stores have told me that is the only way to solve this problem.
    Any help on this issue would be appreciate. I have found "split nut" but they are threaded for the booster pump and not the filter.

    Thanks!

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    pabeader's Avatar
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    Re: Hayward DE Locknut

    Interesting that you mention a flare fitting. From what I see it should just be a o-ring , no flare. Maybe the flare isn't on purpose and can be squeezed down to allow the nut to be replaced?

    Please post a pic and maybe we can offer some better help.
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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    Re: Hayward DE Locknut

    I think the original poster used "flare fitting" in the generic sense, in that the fittings are dis-connectable pipe fittings.

    From looking at the Hayward parts blow-ups, it looks like there's really may be no way to replace the coupling nuts.

    As an alternative, and if the outside diameter of the valve tubes are sized the same as Schedule 40 piping, you could cut the fittings off and solvent weld- on some standard pipe unions. You'd also have to replace the fittings on the DE filter to match, but those simply unscrew so they're the easier part of the job. If you did it yourself, that would be about a $45 cost for parts.

    In the mean time, if the split is across the nut, you may be able to gently hold it together with a large hose clamp around the outside diameter of the nut. It would be a balancing act as to how tight to make the clamp, but it may hold things together sufficiently for continued use.
    21K gal 16' x 40' in-ground pool built 1959, old school with Jacuzzi bronze pump, American Products 24" Sand Filter & Americana Multiport valve, Jandy Lite2 millivolt heater, Coverstar cover, and classic Kreepy Krauly.

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    Re: Hayward DE Locknut

    Please post a link to the pictures you are using. So I will know better next time. I would really appreciate it.

    Great suggestion BTW. Was wondering if that would work.
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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    gtemkin's Avatar
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    Re: Hayward DE Locknut

    Quote Originally Posted by pabeader View Post
    Please post a link to the pictures you are using. So I will know better next time. I would really appreciate it....
    If you're referring to the manuals and parts pages I looked at, just Google the model numbers of the Valve (SP740DE) and Filter (DE6000) and click on the pdf's that show up, which are usually manuals, or click on the online pool parts store links, who usually have lots of blown up diagrams and sometimes parts photos.

    99% of the diagrams and photos of that valve assembly have the coupling nuts moved up so you can't see what's preventing them from coming off, but I found an image on the Google Images tab that shows there are large flanges that the coupling nuts tighten against, so there's really no hope of squeezing or stretching the nuts past them. Here's a link to the photo:

    hay-06-237.pdf
    21K gal 16' x 40' in-ground pool built 1959, old school with Jacuzzi bronze pump, American Products 24" Sand Filter & Americana Multiport valve, Jandy Lite2 millivolt heater, Coverstar cover, and classic Kreepy Krauly.

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    Re: Hayward DE Locknut

    Ah that explains it then. Thanks!! I still think your idea of cutting the fitting and then gluing it back together would work fine.
    Bob - Palm Beach by San Juan Pools. approx 5000 gals., Pentair 320 cartridge filter (all new guts installed by me), Goldline SWG, 'New to me' Kreepy Krauly Sand Shark, Intermec 104 Timer Test kit: TF-100 w/Speed Stir

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    Re: Hayward DE Locknut

    By the way, would this work? It's for a 2" size hayward coupling but it say's it for a pump.

    http://www.spapumpsandmore.com/spa_p...0_p/unrn20.htm

    Edit: Type Hayward 2" repair split coupling nut into Google Images and check out all the different photo's. Can't say if any will work, but I think that's the idea of what your looking for.
    Last edited by gtemkin; 08-30-2015 at 02:57 PM. Reason: More information
    21K gal 16' x 40' in-ground pool built 1959, old school with Jacuzzi bronze pump, American Products 24" Sand Filter & Americana Multiport valve, Jandy Lite2 millivolt heater, Coverstar cover, and classic Kreepy Krauly.

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    Re: Hayward DE Locknut

    Thanks for the response!
    Unfortunately that split nut is the same one I ordered and does not work for the Hayward pumps....I'll probaly give Hayward a call and see if thy know of a replacement part.

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