Air Pressure Sensing Switch FS-751 FS@ 0.05" WC | NBK-21100

NBK-21100 – Air Pressure Sensing Switch FS-751 | Field Set at 0.05" WC

The NBK-21100 Air Pressure Sensing Switch provides reliable detection of low-pressure differentials in HVAC and industrial air systems. Operating at a field setting of 0.05 inches WC, this ultra-sensitive switch is ideal for applications that require precise airflow detection and control. Built for dependable operation, it ensures consistent system performance and safety in combustion and ventilation setups.

Key Features:
• Ultra-Sensitive Sensing – Factory set at 0.05" WC for precise low-pressure monitoring
• Durable and Accurate – Engineered to maintain calibration and performance in demanding HVAC environments
• Universal Compatibility – Suitable replacement for a wide range of standard air proving switches
• Reliable Airflow Control – Helps ensure proper system operation and protection against airflow failure

Specifications:
• SKU: 21100
• Category: HVAC / Air Pressure Sensing Switches
• Model: FS-751
• Field Setting: 0.05 inch WC
• Application: Air pressure monitoring and safety control in HVAC and combustion systems

Equivalent To:
• Cleveland Controls: FS-751

Why Choose the NBK-21100?
The NBK-21100 Air Pressure Sensing Switch ensures your HVAC, ventilation, or combustion systems operate only when adequate airflow is detected—helping to prevent system damage and maintain safety. It’s the perfect OEM-style replacement for sensitive air pressure monitoring applications, providing dependable performance and easy installation.

Shipping & Availability:
Special order item from NBK. Please allow 1–2 business days for processing before shipment.