The head should be raised to the proper height to allow the spray pattern to cover the intended area. When heads are too low, the spray pattern is hendered by the grass blades or outher ground cover thus causing the head to puddle more water around the head and less water at the end of intended throw. It will become more obvious the spring and summer as the grass gets fuller that you have a problem with dry spots since the spray pattern will not cover all the intended area.
If the pop up riser and nozzle of the spray head does pop up high enough to clear the grass and spray un-hindered, then you can leave the head below the soil level.
The tops of pop-up sprinkler heads and rotors should be slightly above the soil surface. Any higher, and they're subject to damage when mowing or engaging in yard activities.
<b>To Easily install or raise sprinkler heads to the proper height, use pre-made Hunter swing joints!</b>
Save yourself time and money....
If you've experienced trouble installing sprinklers to correct finish grade because you can't find the right riser length...if your pipes are buried in shallow trenches and you want to retrofit to taller pop-up sprinklers...if you're having difficulty raising sprinklers buried under inches of built-up thatch...if you want to be sure when a sprinkler has heavy equipment rolling over the top it can easily be properly readjusted...then here's the perfect solution. The Hunter Swing Joint is the simple way to adjust a hard-to-place sprinkler to its proper height and position in mere seconds. This versatile creation is available in two different versions - for new installations or for retrofits - and, with a simple twist of the wrist, either can install to virtually any position, making it the ideal option to add to sprays and rotors at any time. This is an innovative product you won't want to pass up!
Click on the link below to see pictures of the Hunter Pre-made Swing Joints, click on the picture of the swing joints to see more color pictures of swing joints in use:
http://www.sprinklerwarehouse.com/shop3/MiscRisers.html
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Edited by - sprinklerWarehouse Irrigator on Jan 03 2002 6:47:02 PM
