ZVR104 | Zone Valve Relay 4 Zone | Caleffi Seal Material_EPDM This helps to improve system

This helps to improve system efficiency

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solid carbide construction

Regulator 210 1-1/2 Inch 7 Inches of Water Column Set 4-8 Inch Spring 10 Pounds per Square Inch High Strength Aluminum Alloy -40 to 200 Degrees Fahrenheit NPT for Gas

and M6 screws

ZVR104 | Zone Valve Relay 4 Zone | Caleffi Seal Material_EPDM This helps to improve systemCaleffi Zone Valve Relay, 4 Zone (ZVR104) Caleffi's ZVR104 Zone Valve Relay is designed to control up to four independent zone valves, enabling efficient management of hydronic heating systems. This compact and reliable relay features multiple inputs for thermostats and end switches, ensuring precise control of zone temperatures. Key Features: Powers up to four zone valves Multiple inputs for thermostats and end switches Compact and easy to install