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The Watts 77SI-1 is a thermostatic mixing valve designed for controlling water temperature in various plumbing applications. This valve ensures a balanced mix of hot and cold water, preventing scalding and maintaining user safety. Installation is straightforward, making it suitable for both new and retrofit applications.
The 77SI-1 features a built-in temperature limit stop, ensuring optimal water temperature control for showers, sinks, and other fixtures.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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