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- Also known as a washerless faucet.
- A single-handle faucet that uses a ball with openings in it to control hot and cold water.
- May leak either at the spigot or at the handle.
- Leaks from the handle are usually caused by improper adjusting-ring tension. To stop the leak, adjust the tension.
- Worn cam seals can also result in leaks at the handle.
- Worn spring-loaded, soft rubber seal assemblies usually cause dripping from the spigot.