Unique 19+ Kohler Devonshire Faucet Repair. Despite kohler's reputation for quality, even the best faucets are subject to normal wear and tear over time. However, for the love of god, i can't find a way to open the faucet so that i can replace the valve cartridge. Installing new valves in a two handle faucet is something almost anyone can do! Kohler faucets are designed for the homeowner to repair.