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The Honeywell 40003916-021/U Replacement Head is designed for use with zone valves that operate with a spring return to open. It operates at twenty-four volts and is suitable for fifty or sixty hertz applications. This replacement head can withstand maximum ambient temperatures of one hundred twenty-five degrees Fahrenheit, making it a reliable choice for HVAC systems.
The Honeywell replacement head provides efficient operation for heating and cooling systems, ensuring reliability in various conditions.
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