Armstrong International 811-3/4-200 Trap

The Armstrong International 811-3/4-200 Trap is a high-performance inverted bucket steam trap engineered for superior condensate drainage in industrial heating systems. Constructed with a rugged cast iron steam trap body, this Series 811 model features a 3/4" NPT connection and is designed to handle pressures up to 200 PSI. The precision-engineered 7/64" orifice ensures optimal flow control, while the unique inverted bucket mechanism provides excellent resistance to water hammer and wear. Ideal for Shopify HVACR applications, this unit excels at venting air and non-condensable gases continuously, maintaining maximum heat transfer efficiency. By utilizing a simple, robust design with few moving parts, the Armstrong 811 steam trap minimizes maintenance requirements and prevents steam loss, making it a reliable choice for technical professionals seeking industrial steam traps that withstand harsh operating conditions.

Key Benefits

• Superior Water Hammer Resistance: The inverted bucket design ensures long-lasting operation even in systems prone to hydraulic shock.
• High Pressure Capacity: Rated for 200 PSI, providing versatile performance across various commercial and industrial steam lines.
• Energy Efficiency: The tight-sealing 7/64" orifice prevents live steam loss, significantly reducing facility energy costs.
• Self-Cleaning Action: Continuous agitation during discharge prevents dirt and scale accumulation within the trap.
• Effective Air Venting: Rapidly removes air from the system to prevent cold spots and improve heat-up times.

Common Questions

How do I select the correct orifice size for my 811 series trap?
Orifice selection depends on the maximum operating pressure and the required condensate load. The 7/64" orifice in this model is optimized for 200 PSI applications.

Can the Armstrong 811 be installed in vertical piping?
The Series 811 is designed for horizontal piping configurations to ensure the bucket mechanism functions correctly via buoyancy.

What maintenance is required for cast iron inverted bucket traps?
These traps are largely self-scrubbing, but periodic inspection of the valve seat and lever mechanism is recommended to ensure debris hasn't obstructed the orifice.

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.