Most failures result from seized damper blades or excessive friction in the linkage

If no flame is detected

Features high-density circuitry architecture for improved signal reliability and reduced EMI interference

Its PopTop™ design is a favorite among field technicians

Patterson-Kelley 86-8335-0170 Air Flow Switch 322838-754 Most failures result from seizedThe Patterson Kelley 86 8335 0170 Air Flow Switch is a critical safety and operational component designed for high performance commercial boilers and water heaters. As an OEM airflow switch replacement, this unit utilizes a sensitive differential pressure diaphragm to detect proper combustion air or exhaust flow. It is engineered to interface directly with Patterson Kelley industrial air flow switch control systems, ensuring the burner only fires when