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which is standard for many ICP blower wheel vertical assemblies
as well as the 1" Watts U5 series
Built with 1 NO and 1 NC built-in auxiliary contacts
Durable Bellows Design: Built to provide repeatable linear movement
Aprilaire 4592 Airflow Proving Switch 318172-701 which is standard for manyThe Aprilaire 4592 Airflow Proving Switch is a genuine OEM airflow safety switch engineered to provide precision monitoring of pressure differentials within your HVAC system. This Aprilaire model 4592 serves as a critical differential pressure switch, ensuring that secondary equipment like whole home humidifiers or electronic air cleaners only activate when proper blower operation is detected. By acting as an HVAC airflow sensor, it prevents equipment
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