How does a foam marker work? Foam marker operation The air pump sends air to each of the foamer heads, one on each end of the boom. The liquid pumps takes the foam solution and sends to each of the foamer heads as well. The air lines and liquid lines meet at each foamer head, mixing together right before the foam is dropped onto the turf.
What is a foam marker on a sprayer? Foam Markers for Ag Sprayers CropCare® foam marker systems are great tools for increasing accuracy and efficiency, whether you are spraying or using a no-till drill or planter. Large visible foam marks save time and money by reducing overlap and skips.