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Thread: outdoor pvc pipe and saddle tee question about maximum pressure

  1. #1
    DIY Junior Member hamlet_jones's Avatar
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    Default outdoor pvc pipe and saddle tee question about maximum pressure

    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. #2
    In the Trades Gary Swart's Avatar
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    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.

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    DIY Junior Member hamlet_jones's Avatar
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    Okay, I'll use a Slip-Fit with a tee. I'll look for an appropriate BF.

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    Forum Admin, Expert Plumber Terry's Avatar
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    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.

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    DIY Junior Member hamlet_jones's Avatar
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    Jogging sideways in a ditch? Story of my life...

    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.

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    Forum Admin, Expert Plumber Terry's Avatar
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    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.

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    DIY Junior Member hamlet_jones's Avatar
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    Okay, thanks Terry. I'll use the primer/glue and be done with it.

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    Moderator & Master Plumber hj's Avatar
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    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.
    Licensed residential and commercial plumber

  9. #9
    DIY Junior Member hamlet_jones's Avatar
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    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. #10
    Moderator & Master Plumber hj's Avatar
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    No, I have a "Hot tap" device that screws on to the valve and drill is inside it. No leaking.
    Licensed residential and commercial plumber

  11. #11
    DIY Junior Member hamlet_jones's Avatar
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    Quote Originally Posted by hj View Post
    No, I have a "Hot tap" device that screws on to the valve and drill is inside it. No leaking.
    Sounds like a tool the NSA should have used

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