Due to historical engineering decisions made many decades ago, a great many irrigation systems rely on solenoid valves that ...

Solenoids have long been used to control valves and fluid flow. A typical solenoid converts an input voltage to magnetic force that attracts a moveable core which, in turn, opens or closes a valve.

Relays and solenoids are available with many different voltage ratings. Most factory- and process-automation equipment operates from 24-V supplies. However, customers may have control signals for a ...