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The Caleffi 521606A is a 3-way mixing valve designed for use in hydronic heating systems and domestic hot water applications. This valve maintains a consistent output temperature by compensating for changes in both temperature and pressure of incoming hot and cold water.
The 521606A valve is essential for efficient water temperature management in heating systems.
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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