Due to historical engineering decisions made many decades ago, a great many irrigation systems rely on solenoid valves that operate on 24 volts AC. This can be inconvenient if you’re trying to ...

Solenoids at turn-on draw currentthat is much higher than the currentneeded to keep the armature pulledin. Further, because of the power dissipatedin the coil, the solenoid’s temperaturewill rise, and ...