Armstrong International 15B6 Trap

The Armstrong International 15B6 is a heavy-duty cast iron float and thermostatic steam trap designed for low-pressure steam heating systems requiring continuous drainage and high air-venting capacity. Engineered for reliability, this 1 1/2" NPT steam trap handles modulating pressures and varying loads with ease, making it a primary choice for heat exchangers and steam mains. With a 15 PSI maximum operating pressure and a 1/2" orifice, the 15B6 ensures efficient condensate removal even in systems utilizing vacuum returns. Its integrated thermostatic air vent features a balanced pressure phosphor-bronze bellows that responds accurately to the steam pressure-temperature curve, discharging air and non-condensable gases at slightly below steam temperature. The rugged ASTM A48 Class 30 body construction and stainless steel internals provide durability against the rigors of industrial HVAC condensate management, ensuring your steam system maintains peak thermal efficiency and prevents water hammer.

Key Benefits:

• Optimized Heat Transfer: Continuous drainage ensures heat exchange equipment operates at maximum capacity without condensate backup.
• Advanced Air Venting: The internal thermostatic air vent rapidly clears air during startup and throughout operation to improve system response.
• Versatile Piping: Features a same-side inlet/outlet configuration with an alternate inlet to provide flexibility during installation.
• Vacuum System Compatibility: Specifically designed to perform reliably in systems from 20" Hg vacuum up to 15 PSI.
• Durable Construction: Built with a high-strength cast iron body and corrosion-resistant stainless steel valve and seat components.

Common Questions:

Can the Armstrong 15B6 be used in outdoor applications?
Cast iron traps are generally not recommended for outdoor systems where freezing may occur or where excessive hydraulic shock is present.

What is the discharge capacity of this F&T trap?
Depending on the differential pressure, the 15B6 can handle substantial condensate loads, typically up to 2,760 pounds per hour at its 15 PSI rating.

Is maintenance possible without removing the trap from the piping?
Yes, the design allows for internal mechanism access and repair while the body remains in the line, reducing downtime during service.

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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