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The Caleffi 521609AC is a 1 inch sweat union thermostat mixing valve designed for temperature control in heating systems. Suitable for domestic hot water production, it ensures stable output temperature by compensating for fluctuations in incoming water temperature.
This mixing valve is essential for maintaining comfort in heating applications. It is built for reliable performance in domestic hot water 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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