Patterson-Kelley 86-8335-0170 Air Flow Switch 321894-706 Adjustable Sensing: The differential pressure

Adjustable Sensing: The differential pressure switch allows technicians to fine-tune the engagement threshold from 0

the switch is performing its safety function to prevent damage to the heat exchanger

By providing continuous thermal feedback to the defrost control board

Frequently Asked Questions What are the connection sizes for the 106484002 valve

Patterson-Kelley 86-8335-0170 Air Flow Switch 321894-706 Adjustable Sensing: The differential pressureThe 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