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The Caleffi 521510A MixCal 521 series three-way thermostatic mixing valve is designed for systems producing domestic hot water or in hydronic and radiant heating systems. It maintains a constant desired output temperature of mixed water, compensating for temperature and pressure fluctuations of incoming hot and cold water. This valve is certified to ASSE 1017 and Low Lead Plumbing Law by IAPMO R&T.
Maintains constant mixed water temperature, compensates for fluctuations, and includes a temperature gauge for monitoring.
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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