Description
Boost the performance and safety of your sealed hydronic heating or radiant system with the Caleffi 573002A AutoFill™ Combo — an automatic filling valve with integrated backflow preventer engineered for reliable pressure maintenance and potable-water protection. Designed for HVAC professionals and DIY installers alike, this premium valve combo simplifies system charging and ensures consistent fill control without manual intervention.
Key Features
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Automatic Pressure Fill: Automatically fills the hydronic system to a preset pressure and stops when reached, eliminating manual fill-up and reducing setup time.
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Integrated Backflow Preventer: Built-in backflow prevention protects potable water supplies from contamination due to back-siphonage or back pressure.
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Pre-Adjustable Settings: Factory preset to approximately 15 psi with a wide adjustment range from 3 – 60 psi for flexible system tuning.
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Brass Construction: Durable brass body and corrosion-resistant internal components provide long service life in demanding HVAC environments.
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Standard Connections: ½″ MNPT inlet and ½″ FNPT outlet connections make installation straightforward in most hydronic systems.
