Description
Enhance performance and precision in your hydronic heating and cooling system with the Caleffi Z-One™ 3-Way Valve Body (Z307537). Engineered for reliable diverting flow control in residential and commercial HVAC applications, this low-lead brass valve body offers durable construction, smooth operation, and compatibility with motorized actuators for efficient zone management.
Key Features
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3-Way Diverting Design: Efficiently directs fluid between circuits for precise temperature and flow control in zoned hydronic systems.
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3/4″ Sweat Connections: Standard sweat fittings ensure secure installation with common piping materials.
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High Flow Capacity (7.5 Cv): Designed for robust flow performance in larger zones or higher demand systems.
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Lead-Free Brass Construction: Complies with safe water-system standards while providing long-lasting corrosion resistance.
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Wide Operating Range: Suitable for water temperatures up to 240 °F and pressures up to 300 psi, making it ideal for both heating and chilled-water loops.
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Compact, Installer-Friendly Design: Easy to integrate into existing hydronic piping layouts and compatible with a range of Caleffi actuators.






