You've got questions and our Licensed Irrigators have answers.
This week's question:
How do I know what nozzle to use?
Answer:
Nozzles come in many sizes. Check the top of the nozzle for a number and letter. The number you see is the Radius, how far the nozzle will spray. The letter is the Arc, the pattern of spray. Most commonly you will see F- Full nozzles/360° Pattern, H- Half Nozzles/180° Pattern, and Q-Quarter Nozzles/ 90° pattern. Additionally, you may also see A-Adjustable nozzles which can range from 0°-360°. When replacing nozzles your goal is for the water to reach the nearest head, without water over spraying onto sidewalks or buildings. Run the zone to get an idea of where the nearest head is and measure the distance between the heads. See below for some common scenarios.
- If you measure 10’ to the nearest head and the head is in the middle of your yard, a 10F nozzle could be used.
- If you measure 12’ to the nearest head and the head is next to the sidewalk, a 12H nozzle could be used.
- If you measure 15’ to the nearest head and the head is at the edge of your property line and near the sidewalk, a 15Q could be used.
Jo Ostertag, Senior Irrigation Inspector
Want your questions answered? Email us at waterwise@friscotexas.gov.
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