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Industrial-Grade Construction: Designed to withstand constant thermal cycling without calibration drift or terminal degradation
While the 12-inch length is standard for the #13 rod
3" WC Rating: Calibrated to meet exact factory specifications for accurate furnace pressure switch troubleshooting
product data and specifications are subject to change
The Schneider Electric (Barber Colman) AT-520-40 Knob Kit is a critical replacement component for field technicians managing pneumatic control systems and legacy HVAC automation hardware
Johnson Controls A99BB-25 Temperature Sensor Industrial-Grade Construction: Designed to withstandThe Johnson Controls A99BB 25 Temperature Sensor is a high accuracy PTC silicon sensor designed for precision monitoring in commercial refrigeration and HVAC applications. This passive Positive Temperature Coefficient sensing element provides a reference resistance of 1,035 ohms at 77? F (25? C), ensuring reliable data for system 450 controls, A419, and A421 series modules. The sensor is constructed with a stainless steel bulb and a 9 3 4 inch PVC