Hunter Irrigation 440200

The Hunter 440200 Cap and Spindle Assembly is the official replacement component for Mini-Clik rain sensors that have worn out or stopped functioning properly. This genuine Hunter Industries part restores your rain sensor's ability to accurately detect rainfall and prevent unnecessary irrigation, helping you conserve water and protect your landscape from overwatering.
Rather than replacing your entire Mini-Clik rain sensor, this affordable repair kit provides everything you need to bring your existing sensor back to factory specifications. The assembly includes the top cap, spindle mechanism, and most importantly, new hygroscopic discs that are critical to proper rain detection.
Key Features
Genuine OEM Hunter Industries Part: Factory-quality replacement ensures perfect fit and reliable performance with your existing Mini-Clik rain sensor.
Complete Cap and Spindle Assembly: Includes all necessary components, including fresh hygroscopic discs, spindle, cap, and hardware for a complete repair.
Cost-Effective Solution: Repair your existing rain sensor for a fraction of the cost of purchasing a new complete unit.
Easy Installation: Simple twist-on/twist-off design allows for quick replacement without special tools or technical expertise.
Restores Accurate Rain Detection: New hygroscopic discs properly expand when wet and contract when dry, ensuring your sensor responds correctly to rainfall.
Compatible with All Mini-Clik Models: Works with all Hunter Mini-Clik rain sensor variants, including hardwired and wireless versions.
Why Replace Your Cap and Spindle Assembly
Over time, the hygroscopic discs inside your Mini-Clik rain sensor can wear out, become contaminated with dirt and debris, or lose their ability to properly expand and contract. When this happens, your rain sensor may fail to shut off your irrigation system during rainfall, or it may falsely trigger and prevent watering when it's dry.
Signs that indicate your hygroscopic discs need replacement include the sensor not responding to rainfall or staying activated even when completely dry. Before replacing the entire sensor unit, the 440200 Cap and Spindle Assembly offers an economical repair option that addresses the most common failure points.