McDonnell & Miller AF1

McDonnell & Miller AF1 air flow switch for medium and high velocity systems (model 122800) ensures precise airflow sensing and safe boiler operation. The AF1 delivers quick detection of airflow changes to protect burners and maintain reliable ignition.

Designed for demanding industrial boiler environments, this air flow switch delivers consistent performance in medium and high velocity ductwork. It functions as a critical boiler safety control, helping you meet safety and regulatory requirements while reducing the risk of flame rollout, fuel misfires, and unnecessary shutdowns. Its robust seal and calibrated switch point also help minimize nuisance trips, while compatibility with standard control interfaces makes retrofits straightforward.

• Accurate airflow detection for medium and high velocity applications
• Fast response to changing airflow to prevent unsafe shutdowns
• Durable, industrial-grade construction engineered for long service life
• Easy integration with McDonnell & Miller AF1 control systems (model 122800)
• Reliable switch action that enhances burner safety and system reliability

Choose the AF1 for dependable, maintenance-friendly air flow control in your heating and ventilation setup.