Galcon DC Solenoid (2 wire)

Follow these steps to successfully replace your faulty solenoid.

Step 1: Shut Off Water Supply
Turn off the main water line feeding the valve manifold to ensure there is no active pressure before you remove the old component.

Step 2: Remove the Old Solenoid
Disconnect the old wire splices. Firmly grasp the old solenoid on top of the valve and twist it counter-clockwise to unscrew it completely from the valve body.

Step 3: Install the New Solenoid
Check that the rubber O-ring is seated properly at the base. Thread the new Galcon DC solenoid clockwise onto the valve port and hand-tighten until snug (do not use wrenches).

Step 4: Splice the Wires
Using waterproof silicone-filled wire nuts, splice the red wire to the positive terminal/station wire on your DC controller, and the black wire to the negative/common wire.

Will this solenoid work with my standard plug-in 24V AC controller?
No, this is a DC latching solenoid designed strictly for battery-operated timers. Standard hardwired AC controllers will send a continuous current that will immediately fry this DC solenoid.

Do I need to dig up my entire valve if it won't open?
Usually, no. If a valve fails to actuate, it is almost always the electronic solenoid that has failed. Replacing just this top component is a fast, plumbing-free way to fix the issue.

How do I wire the red and black leads?
The red wire is the positive lead and connects to the specific station output on your DC timer. The black wire is the negative lead and connects to the timer's common port.

Why is it important to replace malfunctioning solenoids now, in mid-May?
Fixing unresponsive zones right now ensures your automated battery system is fully functional before the summer heat hits. If a solenoid sticks closed during an impending heatwave, remote plants will rapidly suffer from severe dehydration.