When to replace valves

Discussion in 'Irrigation' started by phareous, Jul 24, 2008.

  1. phareous

    phareous LawnSite Member
    Posts: 45

    I purchased a 10-year old house about a year and a half ago... the existing sprinkler system hasn't worked since I moved in and I've started to investigate into how its all laid out. This isn't directly related to why it hasn't worked...but after looking over things I discovered that they tied one zone directly into the main water line without using a backflow preventer or anything. And the other three zones (while tied into a backflow preventer), are located right under a bush. So I am going to need to move all these valves and plumb it correctly so its safe and can be maintained.

    My question is do you think there are any issues by reusing the valves, or should I just buy new ones since I am going through the trouble of disassembling the pipes, laying new ones, etc.? These are 10-year old rainbird DV valves. I have replaced the diaphragms as part of my repairs. They turn on and off fine, and don't leak as far as I can tell. Have there been any kind of improvements, etc. in the past 10 years that I could benefit from or am I good with what I have?
     
  2. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,532

    At 10 yrs old they have live 70% of their life already. Replace em while your in there.
     
  3. phareous

    phareous LawnSite Member
    Posts: 45

    Ok sounds like a good idea. And if I want to add a master valve, I just use the same type as the rest?
     
  4. AI Inc

    AI Inc LawnSite Fanatic
    Posts: 25,532

    Yes , sometimes when using a master valve ( we hardly ever do ) we will use a flow control.
     
  5. phareous

    phareous LawnSite Member
    Posts: 45

    So what brand/model valves do you personally install?
     
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,070

    Since a master valve works every time a zone or program comes on, we will use a high quality brass valve.
     
  7. Flow Control

    Flow Control LawnSite Bronze Member
    Posts: 1,267

    What model?
     
  8. phareous

    phareous LawnSite Member
    Posts: 45

  9. Mike Leary

    Mike Leary LawnSite Fanatic
    Posts: 22,070

    I've got thirty Weather-Matic 8000 series in service with the S24B solenoid,
    had problems zero. :)
     
  10. Tom Tom

    Tom Tom LawnSite Bronze Member
    Posts: 1,278

    Repaired one the other day that needed a diaphragm. Had to locate the damn valve too. In the ground for 35 years!

    DSC04111.JPG
     

Share This Page