Irrigation. Tap into main line

Discussion in 'Irrigation / Sprinkler Forum' started by Jackson882, Sep 6, 2019.

  1. Jackson882

    Jackson882 New Member

    Jun 18, 2019
    I am wanting to install a sprinkler system at my house. I have 3/4 PEX coming from water meter into my house. I was wondering the best way to tap into this line. I want to run PVC for the sprinkler system so I will need some sort of 3/4 PEX fitting with a tee for the PVC to run off of. Can anyone provide me with direction on what fittings will work?
    Last edited by a moderator: Sep 6, 2019
  2. Terry

    Terry Administrator Staff Member

    Aug 17, 2004
    Bothell, Washington
    3/4" PEX might work for a one bath home. Not for irrigation though.
    I would pull something much bigger right off the meter if you're planning on popping the heads up on your irrigation. There is a lot of friction loss with the small lines and PEX is a small size anyway.

    A chart for PEX
    You can see how much better 1" is over 3/4".
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  4. WorthFlorida

    WorthFlorida The wife is still training me.

    Oct 28, 2009
    Orlando, Florida
    For most residential homes for irrigation 1/2", 3/4", and 1" PVC is the norm. To switch from PEX to PVC, sharkbite is the best way to go but since it will be underground, the coupler must have a silicone wrap around it. You also will need a backflow device before the irrigation system.

    Not knowing the size of the yard, type of sprinklers you want to use and GPM your city water can provide, it hard to say if 1" inch would help unless you have very long runs. 1" will reduce the friction as Terry stated. For the most part you run 3/4" everywhere and tee off to the sprinkler head with a 3/4x3/4x1/2" tee.
    MASTERPLUMB777 likes this.
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