Armstrong International B4028-1 Float Mechanism

The Armstrong International B4028-1 Float Mechanism is a critical precision-engineered component designed specifically for B8 Series Float & Thermostatic Steam Traps. This heavy-duty steam trap repair kit serves as the direct internal replacement for the legacy 15B8-MECH assembly, ensuring seamless system restoration without the need for full trap replacement. Optimized for low-pressure applications, this F&T steam trap mechanism features a large 7/8" orifice and is meticulously rated for a maximum operating pressure of 15 PSI. By utilizing high-grade stainless steel linkages and a robust seat design, the B4028-1 facilitates efficient condensate drainage and prevents steam loss, which is vital for maintaining the thermal efficiency of HVAC and industrial process heating systems. This "less float" configuration allows technicians to utilize existing buoyant elements while upgrading the wear-prone mechanical linkages, providing a cost-effective solution for steam system maintenance and performance optimization.

Key Benefits

• Direct OEM Compatibility: Engineered as the exact replacement for 15B8-MECH, ensuring perfect fitment and function within B8 Series housings.
• Optimized Flow Dynamics: The 7/8" orifice allows for rapid discharge of condensate, preventing water hammer and improving heat transfer.
• Enhanced System Reliability: Restores the modulated discharge capability of the steam trap, crucial for varying load conditions in low-pressure steam lines.
• Cost-Effective Maintenance: Focused steam trap internal assembly replacement avoids the cost and labor associated with piping in new trap bodies.

Common Questions

How do I know if the B4028-1 is compatible with my steam trap?
This mechanism is designed specifically for the Armstrong B8 Series F&T Traps and is the official replacement for part number 15B8-MECH. Always verify your trap series on the nameplate.

Does this kit include the float ball?
No, this is a "less float" mechanism, meaning it includes the valve, seat, and lever assembly, but requires you to reuse your existing float or purchase one separately.

Can this mechanism be used in high-pressure steam systems?
No, the B4028-1 is specifically rated for 15 PSI. Using this in higher pressure applications may result in the trap failing to open against the differential pressure.

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.