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Thread: Help, need to repair single union

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    Help, need to repair single union

    Hi,

    I bought a house with a pool last year. There is problem with the union ball valve to the skimmer.
    the handle is missing and the square thing that is used to turn the ball valve by the handle is also broken(worn, see attached picture).
    the part # from the picture is Hayward SP722-E.

    Is this fixable without cutting the pipe? if so, how and where to get the parts. I tried searching and reading for a long time, but I couldn't find/figure it out.

    TIA
    Attached Images Attached Images

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    Mod Squad jblizzle's Avatar
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    Re: Help, need to repair single union

    Welcome to TFP!!!

    I do not thing that valve is repairable. This is why we rarely recommend the use of PVC ball valves. They eventually stiffen and break. Much more recommended to use the pool valves (although yours were Hayward) like the Jandy Neverlube or equivalent from Pentair or Hayward.

    You could use a single 3-way valve, since you are going to have to do a good bit of plumbing anyway.
    Jason, TFP Moderator
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    n240sxguy's Avatar
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    Re: Help, need to repair single union

    I agree. My pool has pvc ball valves also, but they have a union on each side so the valve could be replaced if needed. With yours, everything from the pump to the two valves would have to be replaced since you don't have any extra space to make a cut and repair.
    30K gallon IG vinyl. 1.5HP 2-speed Waterway Mustang pump. 600 lb sand filter. Polaris 280. Circupool SI-60+. TF-100

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    Re: Help, need to repair single union

    He can cut right at the valve and there is a little extra space to glue the new valve and the a new elbow going down.
    8000 gal diamond brite pool with 650 gal spillover spa, Pentair 3hp VS pump. Jandy Cartridge filter and Jandy Heat Pump. Jandy PDA automation system with 2 Pentair Laminars. SmartPool NC74S Robotic Pool Cleaner.

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    Re: Help, need to repair single union

    how about a double union after cut? how much room do I need on the cut side using a double union(any suggestions)?

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    Mod Squad JVTrain's Avatar
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    Re: Help, need to repair single union

    I'm in a similar situation right now as my main drain cheap-o valve was not holding air lock when I closed. I cut it out and plugged the line with an expandable plug. By the time I open in the spring, I'll have to replace. My set up is VERY similar to yours: A union already there between the pump and T-fitting and no room on either side. My setup has a 4-way split rather than your 3 way T (3 suction lines go to pump). I'm planning on replacing it all from the pump all the way to each suction line with 3 new valves. I thought about having the skimmers on a common valve but would like to be able to isolate one or the other for heavy suction vacuuming if I want to.

    Currently the sticker shock of 3 Jandy Neverlube valves is tough to swallow so I'm also trying to figure out how to do it just right this time around.
    Joel - TFP Moderator - Minnesota - **Become a TFP Supporter!** Helpful Links: ABCs of Pool Water Chemistry - SLAM Procedure - Chlorine/CYA Chart
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    Mod Squad jblizzle's Avatar
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    Re: Help, need to repair single union

    That does not look like enough pipe anywhere to me to have a good solid connection.
    Jason, TFP Moderator
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    Melt In The Sun's Avatar
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    Re: Help, need to repair single union

    Me either. Chop em and replumb using a good 3-way...you'll be happy you did.
    11,200 gal, Pebble-Tec; Tristar 2-speed 1hp - Swimclear 325 ft2 cart - SWG - A & A in-floor cleaner - Heat pump. For the poolside cooking, a Yoder Wichita and a Big Steel Keg!
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    Mod Squad jblizzle's Avatar
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    Re: Help, need to repair single union

    Only other issue is that you are going to have to buy a new Pentair union for the pump connection as well. Actually, maybe not, you may be able to use a fitting one size larger to fit on the outside of the union and then use a reducer to drop back down to your normal pipe size.

    Also back the pump up if you can to leave some pipe exposed for the future if needed.
    Jason, TFP Moderator
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    Re: Help, need to repair single union

    You can get inside pipe extenders which work really well in situations like this. You should be able to find them online and they will not reduce your flow that much.
    Paul
    http://www.gastekservices.com A word of caution: When working with gas and electrical you might want to consider a licensed contractor. Consider the value of your life and others around you. If you would like to provide a review of the help I provided, please use the following link to leave a review. gastek - Google Search,

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    Re: Help, need to repair single union

    ^. I agree on the inside fittings, that is one tight place to get another union properly glued together.

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    Mod Squad jblizzle's Avatar
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    Re: Help, need to repair single union

    I guess I tend to see the inside fittings as band-aids (maybe unwarranted). They will certainly have to add head loss. But, they would make the repair quicker which is maybe why it is the ITI guys that tend to suggest them
    Jason, TFP Moderator
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  13. Back To Top    #13

    Re: Help, need to repair single union

    If you open both union ball valves and the union at the pump, you can remove the whole section and have access to the union ball valve internal parts. You can buy the parts as needed or just buy the whole new valve and use it for parts. The stem is removable and easy to replace.

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    Mod Squad jblizzle's Avatar
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    Re: Help, need to repair single union

    Quote Originally Posted by JamesW View Post
    If you open both union ball valves and the union at the pump, you can remove the whole section and have access to the union ball valve internal parts. You can buy the parts as needed or just buy the whole new valve and use it for parts. The stem is removable and easy to replace.
    and we all over look the obvious ... good catch James
    Jason, TFP Moderator
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  15. Back To Top    #15

    Re: Help, need to repair single union

    Upon closer inspection, the hole where the stem goes through the valve looks like it might be damaged. It might not be worthwhile replacing the stem if the hole is too damaged. It should be considered before deciding what to do.

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    Re: Help, need to repair single union

    Quote Originally Posted by jblizzle View Post
    That does not look like enough pipe anywhere to me to have a good solid connection.
    Right before the valve there is a good 1/2 inch or more of pipe, if he cuts right at the valve, he can use that to glue the new valve to. Unless I'm not looking at the picture correctly.
    8000 gal diamond brite pool with 650 gal spillover spa, Pentair 3hp VS pump. Jandy Cartridge filter and Jandy Heat Pump. Jandy PDA automation system with 2 Pentair Laminars. SmartPool NC74S Robotic Pool Cleaner.

  17. Back To Top    #17

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    Re: Help, need to repair single union

    Just not sure if that is a street elbow or a regular one, also looks like a coupler might if been used to make the sizing all match? If its a coupler, that just adds more problems...

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    Mod Squad jblizzle's Avatar
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    Re: Help, need to repair single union

    Quote Originally Posted by robl45 View Post
    Right before the valve there is a good 1/2 inch or more of pipe, if he cuts right at the valve, he can use that to glue the new valve to. Unless I'm not looking at the picture correctly.
    You need about 2" of pipe to put a fitting on. 1/2" is not going to be robust.
    Jason, TFP Moderator
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  19. Back To Top    #19

    Re: Help, need to repair single union

    Based on the condition of the valves, it might be best to replace both valves and the pump union.

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    Re: Help, need to repair single union

    Quote Originally Posted by jblizzle View Post
    You need about 2" of pipe to put a fitting on. 1/2" is not going to be robust.

    In a perfect world Yes, but I could make that work. Been there and done that and it's quite a job to replace all that pipe.
    8000 gal diamond brite pool with 650 gal spillover spa, Pentair 3hp VS pump. Jandy Cartridge filter and Jandy Heat Pump. Jandy PDA automation system with 2 Pentair Laminars. SmartPool NC74S Robotic Pool Cleaner.

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