Armstrong International 15B5 Trap

The Armstrong International 15B5 is a high-performance float and thermostatic steam trap designed for industrial and commercial heating applications. This 1 1/4 inch NPT steam trap features a durable cast iron body (ASTM A48 Class 30) and is engineered for systems with a 15 PSI maximum operating pressure. Leveraging the Armstrong Series B design, this unit excels in continuous drainage and includes a high-capacity thermostatic air vent to rapidly discharge non-condensable gases. With its 11/32" orifice and same-side connection configuration, it provides exceptional flexibility for horizontal installations in low-pressure steam mains and heat exchange equipment. Whether managing modulating pressures or widely varying loads, the 15B5 ensures efficient condensate removal and optimal system performance. This reliable HVACR steam component is the industry standard for maintaining dry steam and preventing air binding in complex piping networks.

• Enhanced Efficiency: Integrated thermostatic air vent handles large start-up air loads to prevent system lag.
• Durable Construction: Heavy-duty cast iron housing and stainless steel internals provide long-term resilience in rigorous environments.
• Versatile Installation: The 1 1/4" NPT same-side inlet/outlet facilitates easier piping in tight mechanical rooms.
• High Capacity: Optimized for high-flow condensate drainage at low differential pressures up to 15 PSI.
• Responsive Operation: Pressure-balanced thermostatic wafer responds accurately to the steam pressure-temperature curve.

• What is the maximum capacity of the Armstrong 15B5? At its maximum 15 PSI differential, the 15B5 can handle a condensate load of approximately 2,500 lbs/hr.
• Can this trap be used in vacuum return systems? Yes, the Series B F&T traps are specifically designed to respond to pressure-temperature curves ranging from 20" Hg vacuum to their maximum rated pressure.
• How do I troubleshoot a cold trap? A cold trap often indicates air binding or a failed thermostatic element. Ensure the air vent is clear and the upstream strainer is not plugged.

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.

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