What is the difference between rotor heads, and spray heads?
Gear drive heads have a water powered motor that makes the upper part of the head rotate. These heads are used for large turf areas, with throws of 15 to 85 feet. They are adjustable not only in the precipitation rate, but the arc as well. Spray heads are generally used for smaller or oddly shaped turf areas. Spray heads have no moving parts, and emit a spray of a particular pattern. The nozzles are interchangeable, and come in circular, rectangular, and square patterns, with throws of four to fifteen feet. The precipitation rates of these two types of heads are dramatically different, and should never be mixed on the same zone.
Rotor heads are typically used for large turf areas. These sprinklers contain a gear-driven mechanism that rotates the head in a circular pattern. Spray heads are generally used in smaller flower beds and smaller grass areas. These sprinklers do not contain moving parts and emit a fan-type spray in a fixed pattern.