China Solenoid

Most home sprinkler systems have control solenoids on the control valves for each zone. However, there are some systems that are large enough to have a control solenoid on each sprinkler head, like the systems used on golf courses. The easiest way to determine where the control solenoids are is to look at how the system works. If a large number of heads all come on at the same time, then the system is a zone system with control valves. If the system has the ability to turn on one head at a time and there are more wires than a normal person can keep track of coming into the controller, then the system has solenoids on each head. Replacing the solenoids is the same for both system types.