Armstrong International B6747 Cap

The Armstrong International B6747 Cap is a critical replacement component engineered specifically for cast iron inverted bucket steam traps. This heavy-duty cap is designed for seamless integration with the Armstrong 800 Series, 811 Series, 880 Series, and 881 Series traps. As a direct equivalent to part number C3522-811, it serves as a robust pressure-retaining housing component that ensures a secure seal for inverted bucket steam trap maintenance. Built to withstand the thermal cycling and high-pressure environments typical of industrial steam systems, this cap facilitates proper internal alignment of the bucket and lever mechanism. When performing overhead or built-in strainer steam trap repair, utilizing OEM-spec caps like the B6747 is essential for maintaining the operational integrity of the condensate return system and preventing steam trap failure. Its high-grade cast iron construction provides the structural rigidity required for long-term piping stability in volatile heating loops.

• Direct OEM Compatibility: Engineered for precision fitment on Armstrong 800, 811, 880, and 881 cast iron models.
• Interchangeable Design: Functionally identical to technical part number C3522-811 for simplified inventory management.
• Industrial Durability: Constructed from high-strength cast iron to manage condensate load and pressure spikes.
• System Efficiency: Restores the airtight seal necessary for optimal steam trap operation and energy conservation.

Common Questions

Is the B6747 compatible with stainless steel series traps?
No, this cap is specifically engineered for cast iron inverted bucket traps in the 800 and 880 series. For stainless steel models, a different alloy cap is required to match thermal expansion rates and pressure ratings.

Can I use this cap for both horizontal and vertical trap configurations?
Yes, as long as the trap series is an 800, 811, 880, or 881, the B6747 cap provides the necessary housing for its respective internal mechanism regardless of piping orientation.

How do I verify if I need the B6747 or the C3522-811?
These parts are cross-compatible and identical in technical specifications; either part number will satisfy the requirements for the supported Armstrong series traps.

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.