(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 9 of 9

Thread: Low Pressure On 1 Sprinkler Head

  1. #1

    Default Low Pressure On 1 Sprinkler Head

    I have a 10 zone sprinkler system with 4 heads per zone. It's worked great for years. This spring, one head on one zone would only spray water 3 ft (verses 20 ft). I replaced the head and and it would still only spray 3 ft. There were no leaks at any of the sprinkler head connections. I took off the head and there seems to be good water flow, but very low pressure. I don't understand how I can have low pressure on one head while the three other heads on the zone are working fine. Any ideas or suggestions?

  2. #2
    Plumbing Designer FloridaOrange's Avatar
    Join Date
    Dec 2005
    Location
    SW Florida
    Posts
    1,317

    Default

    Could have a kink in the line further up after the three heads that work fine. What's the material?
    Matt
    Semi-professional plumbing designer
    Enjoying life in SW Florida

  3. #3

    Default

    The tubing is 3/4" poly from the valve with 1/2" poly tee'd off going to each head. The problem head is either the first or second heads Tee'd off of the 3/4" line.

  4. #4
    Plumbing Designer FloridaOrange's Avatar
    Join Date
    Dec 2005
    Location
    SW Florida
    Posts
    1,317

    Default

    Have you inspected the 3/4"x1/2" tee?
    Matt
    Semi-professional plumbing designer
    Enjoying life in SW Florida

  5. #5

    Default

    Not yet...regretably it will take a lot of digging. Also, that Tee is close to where the utilities enter the house, so I'll have to get them marked prior to digging.

  6. #6
    Sprinkler Guy Wet_Boots's Avatar
    Join Date
    Mar 2007
    Location
    Metro NYC
    Posts
    798

    Default

    What about the possibility of tree roots choking off the supply?

  7. #7
    DIY Senior Member chris8796's Avatar
    Join Date
    Jan 2005
    Location
    Illinois
    Posts
    100

    Default

    Have you checked the valve for problems? Some valves have built in filters, which can become clogged. Does the valve have flow control and is it opened up?

  8. #8

    Default

    Problem Fixed! FloridaOrange nailed it. The problem was at the Tee. The tubing (not the Tee) was cracked just after the Tee. I spliced in a new peice of tubing, put on the old head, and everything works great.

    It didn't take as much digging as expected. As I was trying different things, water began seeping up from the crack. Thanks for your help.

  9. #9
    Plumbing Designer FloridaOrange's Avatar
    Join Date
    Dec 2005
    Location
    SW Florida
    Posts
    1,317

    Default

    Quote Originally Posted by waders View Post
    Problem Fixed! FloridaOrange nailed it.
    Gonna have to send my wife a link to this!

    Just kidding, glad to help where ever I can.
    Matt
    Semi-professional plumbing designer
    Enjoying life in SW Florida

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •