this SPDT limit control features an automatic reset function that ensures the system returns to normal operation once temperatures stabilize within the safe functional window

making it suitable for older wall or floor furnaces

Key Benefits for Technicians Universal Compatibility: Specifically designed to adapt Belimo SV series actuators to Schneider 1/2" to 2" globe valves

Its PopTop™ design is a favorite among field technicians

If no flame is detected

Patterson-Kelley 86-8335-0170 Air Flow Switch 322838-754 this SPDT limit control featuresThe 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