Armstrong International C5490 Air Vent

The Armstrong International C5490 (functionally identical to the TAVB-2) is a high-performance stainless steel thermostatic air vent and vacuum breaker designed to optimize steam system efficiency. Engineered for pressures up to 150 PSI, this dual-function HVACR component features a 1/2" NPT air vent connection and a 3/8" NPT vacuum breaker inlet. By automatically discharging air and non-condensable gases during start-up and operation, it prevents heat transfer interference and water hammer. Its robust corrosion-resistant stainless steel construction ensures longevity in demanding industrial environments. As a steam system air vent, the C5490 improves thermal response times by breaking vacuum conditions during shutdown, protecting equipment from collapse and ensuring rapid drainage. This Armstrong TAVB-2 replacement is essential for heat exchangers, steam coils, and jacketed kettles seeking to maintain peak operational performance and energy efficiency.

• Dual-Function Design: Combustion of an air vent and vacuum breaker ensures rapid air removal and prevents vacuum formation in a single compact unit.
• Enhanced Durability: All-stainless steel internals provide superior resistance to corrosive condensate and high temperatures.
• Optimized Heat Transfer: Eliminates air pockets that act as insulators, significantly improving the thermal efficiency of steam equipment.
• High Pressure Rating: Reliably operates in systems up to 150 PSI, making it suitable for a wide range of industrial steam applications.
• Automatic Operation: Features a sensitive thermostatic element that reacts instantly to temperature changes for maintenance-free venting.

Common Questions

What is the difference between the Armstrong C5490 and the TAVB-2?
The Armstrong C5490 is the specific part number assigned to the TAVB-2 model; they are identical in specification, materials, and mechanical function.

Can this air vent be used in high-pressure steam systems?
Yes, the Armstrong C5490 air vent is rated for standard industrial steam applications with operating pressures reaching up to 150 PSI.

Why does my steam system need a vacuum breaker?
A vacuum breaker prevents the formation of a vacuum upon system shutdown, which allows condensate to drain freely and protects sensitive equipment from mechanical stress or collapse.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.