Armstrong International 811-1-200 Steam Trap

The Armstrong International 811-1-200 is a high-performance inverted bucket steam trap designed for efficient condensate removal in industrial steam systems. Engineered with a durable cast iron body, this Series 811 model features a 1" NPT connection and a precision-lapped 7/64" orifice, making it ideal for high-pressure environments up to 200 PSI. Its unique leveraged valve system provides a positive opening force to prevent air binding and ensure continuous drainage of air and non-condensable gases. Optimized for saturated steam service, this energy-efficient steam trap utilizes an unattached stainless steel bucket to provide friction-free operation. Whether used in process heating or drip leg applications, the Armstrong 811 offers exceptional resistance to wear and water hammer. By maintaining a liquid seal at the valve seat, this industrial steam trap prevents live steam loss, significantly reducing operational costs and improving overall boiler system performance.

• Enhanced Durability: The rugged cast iron construction resists corrosion and handles harsh steam environments.
• Superior Air Handling: Equipped with an automatic air vent to prevent air binding and ensure rapid system start-up.
• Maintenance Efficiency: Features an inline pipe connection design for easier inspection and parts replacement.
• Water Hammer Resistance: The inverted bucket design is inherently resistant to damage from hydraulic shocks.
• Energy Savings: Eliminates live steam loss by maintaining a constant water seal around the 7/64" orifice.

How does an inverted bucket steam trap handle air?
The Armstrong 811 features a small vent hole in the top of the bucket that allows air to escape and collect at the top of the trap for discharge.

What is the maximum operating pressure for this model?
This specific configuration is designed for a maximum allowable pressure of 200 PSI (14 bar) at saturated steam temperatures.

Can this steam trap be installed in vertical piping?
The Armstrong International 811-1-200 is designed for horizontal installation to ensure the bucket functions correctly with the internal water seal.

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.