6 Zone Manifold and Valve Box - Fimco Indexing Replacement

Discussion in 'Irrigation' started by anotherbrian, Aug 10, 2012.

  1. anotherbrian

    anotherbrian LawnSite Member
    Posts: 21

    I am (finally!!) replacing my 6 zone Fimco Indexing Valve with 6 electical valves. One option is to use two 3-zone manifolds:

    ___L_L_L____L_L_L

    I am not finding a valve box sufficiently large to hold both of the 3-zone manifolds, so I would need two valve boxes.

    Another option is to use three cross manifolds with two valves hung off each cross:

    ---+-+-+

    In this option, I have found a valve box that will work, but it is large and fits poorly (i.e., a lot of the space is unused).

    Is one or the other better? Suggestions?
     
  2. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,896

    Use a 12" standard for three valves, spot a 10" round for the isolation gate valve.
     
  3. jvanvliet

    jvanvliet LawnSite Gold Member
    Posts: 3,939

    Doesn't always work... depends on the size of his valves. I can barely squeeze 3 1.5" into a jumbo.

    Maybe Boots will chime in, he can build a 6 valve manifold that'd fit up a gnats a$$.
     
  4. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,896

    True, I was thinking 1" valves, figured Boots would come on with one his stolen pics.
     
  5. jvanvliet

    jvanvliet LawnSite Gold Member
    Posts: 3,939

    Funny eh? the differences in areas; 1" valves are unusually small in my market, 1.5 more common even for residential.

    Smaller valves for city water & then used as a master for an indexing valve.
     
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 21,896

    That is interesting, I've never, except in large commercial sites, used anything more than 1", since I never exceeded 12-15 gpm per zone, even though I've used 1 1/4" mainline pipe in the megas and 1" for the sub-laterals. :waving:

    DSCN2151medford.jpg
     
  7. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,304

    like, what's the backflow preventer, man?
     
  8. anotherbrian

    anotherbrian LawnSite Member
    Posts: 21

    I have an existing back flow preventer. Our regs in our locality would require certified testing (spelled d-o-l-l-a-r-s) if I touch it (or replace it). So I am leaving it alone. It sits a foot above ground level (give or take) and every sprayer for that matter.

    I am using 1" valves.

    The gnat thing sounds interesting.
     
  9. anotherbrian

    anotherbrian LawnSite Member
    Posts: 21

  10. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,304

    Six in a regular box :)

    [​IMG]
     

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