Armstrong International 811-1-125 Steam Trap

The Armstrong International 811-1-125 is a premier industrial inverted bucket steam trap engineered for superior condensate management in demanding steam systems. Constructed from rugged cast iron, this 1" NPT steam trap provides exceptional energy efficiency by preventing live steam loss through a reliable water seal. Specifically designed for applications up to 125 PSI, the Series 811 features a 1/8" orifice and a floating stainless steel mechanism that minimizes friction and wear. This Armstrong 811 series 125 psi model is ideal for heat exchangers, laundry equipment, and process steam lines where rapid venting of air and non-condensable gases is essential. Its in-line horizontal configuration allows for a compact footprint, while the bottom-in, top-out flow pattern ensures that dirt and scale are held in suspension until discharge, protecting the valve seat from premature failure. Choosing this Armstrong steam trap 811-1-125 ensures a more productive steam loop with reduced labor costs and long-term operational savings.

• High Energy Efficiency: The inverted bucket design utilizes a unique water seal to prevent live steam loss during condensate discharge.
• Superior Durability: Features a heavy-duty cast iron body and stainless steel internal components for resistance to water hammer and corrosion.
• Self-Cleaning Action: The discharge orifice is located at the top of the trap, allowing dirt and small particles to be purged during every cycle.
• Effective Air Venting: A small vent hole in the bucket provides continuous, automatic venting of air and CO2 at steam temperature.
• Inline Maintenance: The 1 inch NPT design allows for easy installation and serviceability within existing horizontal pipe runs.

• What is the maximum condensate capacity for this model? The 811-1-125 model is typically rated for approximately 950 lbs/hr, depending on the differential pressure.
• Can this trap be used in outdoor applications? Yes, the cast iron construction is suitable for various environments, though proper insulation is recommended in freezing climates.
• Why choose an inverted bucket trap over a thermostatic trap? Inverted bucket traps are preferred for their "fail-open" reliability and superior handling of dirt and scale compared to many other trap types.

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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