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The KOHLER 1101643 is a cache aerator rated at 0.5 gallons per minute (GPM), designed for installation in faucet spouts where water conservation and flow control are required. Cache aerators are recessed inside the spout end, making them tamper-resistant and concealed from view. This unit controls outlet flow rate at the faucet, making it a common component in commercial restrooms, healthcare facilities, and other high-use environments where low-flow compliance is a priority. Installation and replacement are handled by licensed plumbers or qualified maintenance technicians using a cache aerator key tool.
The 1101643 is suited for applications requiring ultra-low flow output at 0.5 GPM. This flow rate meets stringent water efficiency standards common in commercial and institutional plumbing installations. The concealed design discourages tampering in public or semi-public restroom environments. It is a direct replacement aerator for compatible KOHLER faucet spouts that accept a cache-style insert.
Designed as an OEM-style replacement cache aerator for compatible KOHLER faucet spouts that accept a recessed cache aerator insert.
Installation and removal require a cache aerator key specific to the aerator size and thread pattern. Shut off the water supply to the faucet before servicing. A licensed plumber or qualified maintenance technician should perform replacement in commercial settings. Take care not to cross-thread the aerator insert during reinstallation to avoid damage to the spout.
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