How long does an angle stop last depends on quality, material, water quality, and how often it is operated, but typical lifespan varies significantly between types. Cheap multi turn compression angle stops with rubber washers, common in older homes, may last 5 to 10 years before developing leaks at stem, failing to shut off completely due to worn washer, or seizing from mineral buildup, especially in hard water areas. Quality quarter turn ball type angle stops made of solid brass, such as Dahl or BrassCraft G2, can last 15 to 25 years or longer with minimal maintenance, as ball valve design has fewer wearing parts and provides tighter seal. In ideal conditions with clean water and occasional exercise, turning valve off and on once a year, high quality angle stop can last 20 to 30 years, potentially lifetime of fixture. Factors that shorten life include hard water with calcium deposits that clog and corrode internals, corrosive water chemistry, overtightening handle, and never operating valve, allowing deposits to harden and seize mechanism. Signs angle stop needs replacement include dripping at stem, inability to fully shut off water, difficulty turning handle, and visible corrosion or green deposits on body. Replacing old angle stops proactively during faucet remodel prevents emergency leaks, and upgrading to quarter turn brass angle stop extends service life considerably.
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