End of run Drip from head??

Discussion in 'Irrigation' started by lawns Etc, Aug 13, 2007.

  1. lawns Etc

    lawns Etc LawnSite Silver Member
    Posts: 2,272

    I have a install from last week thats dripping at the lowest head of a zone . Easy fix right? Not .The valve is not humming. Its a rainbird 5000 plus and 1'' Jar top valve so I went and checked for debris in the gasket and the solenoid and they were clean so I washed them out anyway, still leaking. Next I replaced the head, still leaking and its a Plus with manual shut off and its leaking still even with the head turned off. Next I replaced the entire valve and still leaking , also the Flomatic backflo is about 12" above the lowest head

    Any help will be appreciated
     
  2. CAPT Stream Rotar

    CAPT Stream Rotar LawnSite Fanatic
    Posts: 5,963

    gravity?

    I mean does this last head end @ the bottom of a hill or something?
     
  3. jeffinsgf

    jeffinsgf LawnSite Senior Member
    Posts: 641

    You need a check valve or a body that has a built in check valve.

    What type of head? PGP's have a cheap check valve that you can pop in. Hunter spray bodies have the same thing. Rainbird has the SAM's -- lots of simple solutions to low head draining.
     
  4. jerryrwm

    jerryrwm LawnSite Bronze Member
    Posts: 1,274

    Depending on the size of the zone and the amount and size of pipe you may have a significant amount of water draining from that low head. As the previous have said you will probably need a check valve in the head. Check with supplier and get a Rainbird 5000 SAM. But this is usually good for about 6' of elevation so it may leak a little until it stabilizes.
     
  5. irritation

    irritation LawnSite Gold Member
    Posts: 3,278

    Flomatic? That sounds scary. What type/brand valves did you use?
     
  6. CAPT Stream Rotar

    CAPT Stream Rotar LawnSite Fanatic
    Posts: 5,963

    Flopro Diraphram>Weathermatic body?

    ::runs for life::
     
  7. lawns Etc

    lawns Etc LawnSite Silver Member
    Posts: 2,272

    Zone is only 90' long 1" pvc and elevation is only about 16'' lower than the rest of the property its very flat just a nice grade from foundation to road
     
  8. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,071

    I've not heard of a "Flowmatic" assembly either..I had a Buick Roadmaster
    with "Dyna Flow", tho. If the head is lower than Rain-Bird SAM specs from the
    p.o.c., a Hunter "lipstick" low-drain check can be installed under the head,
    that is screwdiver-adjusted for drop. Warning on those, they eat pressure!
     
  9. lawns Etc

    lawns Etc LawnSite Silver Member
    Posts: 2,272

    Valves are Rainbird R100JTV 1" Jar tops the flomatic is the PVB brand
     
  10. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,071

    You should be fine with a 5000SAM, it'll take 7' drop, remember, the guts
    will change out, but if you're in the side mount, the LDC will not work.:)
     

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