Free Sample
The Complete Handbook of Sprinkler Controls
Professional and Hobbyist Decision-Making for Residential and Commercial Irrigation
by Alumigogo Books
Chapter 1: Understanding Sprinkler Controls
A sprinkler control is a device that automates when and how much water flows through an irrigation system. It sits between your water source and your valves, receiving commands from a timer or scheduling program and sending electrical signals to solenoid valves that open and close. Without a control, you would manually turn water on and off at a main valve with no ability to change timing, water different zones on different schedules, or respond to weather. With one, you can run a residential lawn on a daily schedule, adjust zone runtimes seasonally, integrate rain sensors to skip watering after storms, or manage twenty separate zones on a commercial property with different water needs, all from a single device or smartphone.
The control is often the least visible part of an irrigation system, which is why it's frequently overlooked during selection and why failures surprise people. A broken sprinkler head is obvious—water sprays in the wrong direction or not at all. A pinched supply line is audible and visible. But a failed controller or a mismatched control choice shows up as slow system response, missed watering cycles, unexpected water bills, or weak coverage in certain zones. It's the logic layer, not the hardware layer, so its problems are often attributed to water pressure, valve failures, or valve leaks when the real issue is that the control isn't commanding the valve to open or is opening it at the wrong time.