The essence of an irrigation system is the sprinkler head or nozzle, and there are so many different kinds of them: gear-driven rotors, fixed sprays, rotary nozzles, pop-ups, variable arcs, precision nozzles … on and on and on. The sheer array of them is daunting to the layman, not so much to the trained irrigation professional.
You may have heard the old joke about the doctor who charged $75.00 just to look in somebody’s ear. When the ear’s owner protested, the doctor explained: “Looking in your ear, 50 cents; knowing what to look for, $74.50.”
Just as a doctor knows his anatomy, the irrigation professional understands all the different types of sprinklers intimately; how to tell when they’re working properly or not, when they need replacing and what to replace them with. They know when to choose one type of sprinkler over another for the most efficient watering.
Some, such as rotating and precision nozzles, are designed to deliver only as much water as a landscape or bed needs. Others, such as gear-driven rotors, throw single streams of water long distances. Spray heads shower large sections of turf. All of them have their proper applications (and application rates).
However, no one can be expected to keep all the different manufacturer’s specifications, precipitation rates, arc radii and so forth in their heads. So, every year, we present the Sprinkler Specification Charts to help contractors and technicians choose the right spray bodies, nozzles or heads for the particular applications they’re working with. We hope it helps.
Intro by Mary Elizabeth Williams-Villano; research provided by Janine Sparrowgrove, Katy Yuan and Andreina Orozco. Edited by Kristin Smith-Ely.
View Sprinkler Specification Charts 2018.pdf