Don't use spears manifolds recall

Discussion in 'Irrigation' started by sprinklerhead, Nov 26, 2005.

  1. sprinklerhead

    sprinklerhead LawnSite Member
    from MI.
    Posts: 92

    has anyone used spears #477 010 manifolds? Us and a bunch of other companies had some bad luck with the manifolds cracking at the castings . John Deere landscapes told us there was a recall on this part ,but won't tell you until you have the problem. they told us the product is now over seas and the product is not as good as it use to be.

    cracked mainfold spears.jpg
     
  2. sprinklerhead

    sprinklerhead LawnSite Member
    from MI.
    Posts: 92

    They seem to crack on the line of the castings. notice the very right valve mainfold is cracked

    craked mainofold underground.jpg
     
  3. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    We make our own manifolds....Its not worth stocking a few more parts.

    Whats with the tripple clamped poly?
     
  4. sprinklerhead

    sprinklerhead LawnSite Member
    from MI.
    Posts: 92

    We sell top quality sprinkler sytems , we double & triple clamp all mainlines, but you only have 2 years of experience to know . You make yours ? you mean with poly fittings or regular tees ? anyways i just wanted to warn people before anyone gets screwed.Do you make your own sprinkler heads to?:dizzy:
     
  5. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 48,041

    I have little faith in male threaded valves. Since they require a manifold with FPT fittings, it's a recipe for disaster, or extreme aggravation at least, depending on warranty. The breaks, if and when they occur, will almost always be at the female threads. I can think of no more expensive single residential repair job than the replacement of a broken manifold.

    Because a homemade manifold tee (or cross) has a sch 80 TOE nipple glued into a sch 40 tee (or cross) it will be stronger than a purchased manifold tee. And with the crosses, you get to economize on valve boxes, too! :p
    <img src=http://img348.imageshack.us/img348/6049/eightvalvemanifold23fz.jpg>

    As for multiple clamping on poly, I still double-clamp at the valves, and for any mainline fittings. I don't think it means the quite the same thing as when the poly fittings had the smooth shoulder behind the barbs, where a clamp would make a real difference in preventing the pipe from coming off the fitting. If they aren't serving a real purpose, consider them an offering to the sprinkler gods.
     
  6. BSME

    BSME LawnSite Senior Member
    from Midwest
    Posts: 829

    I think triple clamping is a little ridiculous since I've NEVER seen a mainline leak with just a double clamp... but then I think you're missing the point when you clamp them all in a row and not one on one side and one on the other... the weak point in the clamp stays in the same spot even when you clamp it three times...


    also... I can't stand new systems that have manifolds glued together... If it cracks then you have to replace the whole thing... we usually use the spears threaded tees but this last summer we tried the dura swivel tees and liked them a lot... they save A LOT of time
     
  7. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 48,041

    When was the last time you had to replace a manifold that had no female threads on it?
     
  8. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    I have more than two years experience. We don't make manifolds in one valve box... period. Of course when we're installing PVC and mainly 2" and 3" valves it's kind of hard to get them into one valve box. :p
     
  9. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    This is why I shy away from prefabricated things. I don't even like prefabricated swing joints. I like the control I have on what goes where. Then if something goes wrong I have only myself to blame. :rolleyes:
     
  10. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    SprinkerHead:

    [​IMG]

    I build my manifolds out of regular PVC fittings. Nobody uses poly out here. If your going to triple clamp, at least alternate them.
     

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