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fittings question

Discussion in 'Irrigation' started by Chillenk20, Oct 2, 2006.

  1. Chillenk20

    Chillenk20 LawnSite Member
    Posts: 6

    Am I safe by using a sch. 80 male fitting to go into my backflow preventer or should I use a copper or brass male fitting and then go to pvc? Obviously the coppper or brass will be stronger, but is the pvc strong enough that it doesn't matter?
  2. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,650

    'doesn't matter' in what way? Are you going to tether the Budweiser Clydesdales to your backflow preventer? If you are showing real class, you have nothing but copper and brass above grade.
  3. sheshovel

    sheshovel LawnSite Fanatic
    Posts: 5,112

    Wet boots is correct but you can do it either way.
  4. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Posts: 47,650

    I used to have the opinion that it didn't really matter, but the statement that I'd never had any problem with the PVC had to be retracted when some nimrod on a roof dropped a tray of tools on a manifold of anti-syphon valves.

    Even without sloppy guys on roofs, there can be settling near a foundation, where your backflow plumbing is, and plastic can crack and/or shear. Admittedly, this is more of a northern problem, with the deeper foundations.
  5. Beartooth

    Beartooth LawnSite Member
    Posts: 209

    PVC was NEVER made to be exposed to the elements especially sunshine. The sun will break down and weaken the PVC over time. Use copper--you won't regret it!!
  6. Chillenk20

    Chillenk20 LawnSite Member
    Posts: 6

    my backflow is below ground in a valve box so the pvc will not be exposed to sunlight. Sorry I didn't make that clear when I started the thread. where I live we have minimal regulation on backflowsl.
  7. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,799

    Out here in Doublecheck land our backflows are buried, but I still plumb brass from the POC to the double check, and then PVC on from there.
  8. kozmo

    kozmo LawnSite Member
    Posts: 70

    do you use all threaded connections in our area [jersey] solder won't pass code in ground.
  9. Flow Control

    Flow Control LawnSite Bronze Member
    Posts: 1,267

    same here..
  10. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    Brass, brass, brass... copper, copper, copper. Around here it's mostly galvanized pipe. :laugh:

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