Under normal residential operating conditions with balanced water pressure and standard mineral content, a high-quality brass or composite plastic water inlet valve is engineered to last anywhere from 5 to 10 years, frequently matching the operating lifespan of the appliance or plumbing fixture it serves. However, longevity can be significantly shortened by aggressive hard water scale accumulation, high water hammer pressure spikes, or frequent electrical voltage fluctuations that overheat solenoid coils. Routine maintenance, such as cleaning inlet filter screens, extends durability. You can verify valve health by checking for smooth, quiet operation and zero leaks.
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