Description
The Caleffi Z44 Zone Valve delivers dependable performance and precise water flow control in hydronic heating and cooling systems. Built as part of Caleffi’s well-regarded Z-ONE™ series, this motorized 2-way valve combines rugged construction, a normally-closed actuator, and an auxiliary switch to support efficient zone management and seamless integration into HVAC setups.
Key Features
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Durable 2-Way Zone Valve: Provides reliable on/off control of water flow in zoned systems, helping balance temperature and improve comfort.
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Standard ½″ Sweat Connection: Easy to install with common piping using sweat fittings — ideal for professional plumbing and HVAC applications.
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Normally Closed Actuator: Valve stays closed until a 24 VAC signal opens it, maximizing system efficiency and reducing unnecessary flow.
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Auxiliary Micro-Switch: Built-in switch provides feedback to controllers or pumps for smarter system sequencing.
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Robust Operating Range: Rated for up to 300 psi body pressure and operational temperatures from 32 °F to 240 °F, suitable for a wide range of hydronic systems using water or glycol solutions.
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Compact, Installer-Friendly Design: Simplifies installation in tight mechanical spaces while supporting dependable long-term performance.






