Fleck Special Nut (2500/2750) UV Sterilization Water Purification System The aluminum tank shell provides

The aluminum tank shell provides structural integrity and protects internal components from environmental damage

Typically includes an applicator dauber in the can lid

it delivers consistent results while maintaining system longevity and reliability

The FL56LT-PH power head functions as the central control unit for Fleck 5600 water softener valves

Regular inspection for debris or buildup helps ensure smooth operation

Fleck Special Nut (2500/2750) UV Sterilization Water Purification System The aluminum tank shell providesThe Fleck special nut is a discontinued component from Pentair, no longer available as a current production part. It is listed here primarily for reference and identification, helping owners and technicians recognize the part when servicing older Fleck equipment. As a specialized fastener, it once served a specific role within Fleck control valve assemblies where a standard, off the shelf nut would not provide the required fit, thread, or function for