outdoor pvc pipe and saddle tee question about maximum pressure

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by hamlet_jones, Oct 18, 2013.

  1. hamlet_jones

    hamlet_jones New Member

    Messages:
    11
    Location:
    Idaho
    Hi folks,

    I have a 1-1/2 pvc supply pipe in a 1100 foot run from my well to my house. I need to tap into this near the middle section for irrigation supply to a planned orchard.

    I am contemplating using a sch40 saddle tee. I've dug up the pipe (36 inches deep). Of course, there is no lateral flex in the line, so either it's a saddle tee or
    I cut out a chunk and splice in a regular tee paired with a compression coupling.

    Thoughts?

    How much psi will a saddle tee take? My line is 65psi.
  2. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,384
    Location:
    Yakima WA
    Don't use a saddle tee. They are trouble waiting to happen. You also must install a back flow prevention device where you branch off and the connections would be made with unions. You should consult with an irrigation supply company for the bests BF device. These are supposed to be re-certified annually by a licensed inspector. Idaho may not enforce these regulations, but you sure don't want contaminated water drawn back into you domestic supply.
  3. hamlet_jones

    hamlet_jones New Member

    Messages:
    11
    Location:
    Idaho
    Okay, I'll use a Slip-Fit with a tee. I'll look for an appropriate BF.
  4. Terry

    Terry Administrator Staff Member

    Messages:
    15,293
    Location:
    Bothell, Washington
    Or you can use something like four 90's or two 90's
    Nothing says you can't jog sidewise in the ditch. Or up and down.
  5. hamlet_jones

    hamlet_jones New Member

    Messages:
    11
    Location:
    Idaho
    Jogging sideways in a ditch? Story of my life... :rolleyes:

    I want to avoid the downtime with glue, so I may use compression. This line also supplies a rental home, and cabin. Trying to keep everybody happy.
  6. Terry

    Terry Administrator Staff Member

    Messages:
    15,293
    Location:
    Bothell, Washington
    The last water service leak I worked on, I had to remove the leaking compression fitting they had used to repair a previous leak. It was a dressler coupling I removed.

    If you are using glued fittings, give it and hour and turn the water back on.
    That's what I like doing.
  7. hamlet_jones

    hamlet_jones New Member

    Messages:
    11
    Location:
    Idaho
    Okay, thanks Terry. I'll use the primer/glue and be done with it.
  8. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,032
    Location:
    Cave Creek, Arizona
    Saddles are often used on larger pipe sizes to make a connection, but are seldom used with smaller sizes. If you do use one be sure to use hose clamps on both ends plus primer and glue on the pipe and saddle. Put the saddle on BEFORE you make the hole in the pipe. I fact, with my tools, I would also install the valve, then I could drill the hole without turning off the water, then close the valve when I removed the drill.
  9. hamlet_jones

    hamlet_jones New Member

    Messages:
    11
    Location:
    Idaho
    Interesting. Will a well primed, glued, and CLAMPED saddle last? I like the part about drilling it with the valve installed! (Ball valve?) I'm sure you're using some kind of splash-shield and a cordless drill to prevent electrocution...
  10. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    27,032
    Location:
    Cave Creek, Arizona
    No, I have a "Hot tap" device that screws on to the valve and drill is inside it. No leaking.
  11. hamlet_jones

    hamlet_jones New Member

    Messages:
    11
    Location:
    Idaho
    Sounds like a tool the NSA should have used
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