Armstrong International 880-3/4-20 Trap

The Armstrong International 880-3/4-20 Trap is a high-performance inverted bucket steam trap designed for reliable horizontal installation in demanding HVACR and industrial steam systems. Engineered with a durable cast iron body, this Series 880 model features a 3/4" NPT connection and is specifically optimized for a 20 PSI maximum operating pressure using a precision-machined 3/16" orifice. Unlike standard traps, its free-floating stainless steel mechanism eliminates fixed pivots, significantly reducing wear and friction while ensuring a tight shutoff. The unique design places the discharge orifice at the top, allowing the integral strainer and natural purging action to prevent dirt accumulation. This Armstrong steam trap provides continuous automatic air venting at steam temperature, effectively handling non-condensable gases to prevent CO2 corrosion and air binding. By maintaining a deep water seal, it prevents live steam loss, delivering superior energy efficiency and consistent condensate drainage without backup.

• Enhanced Durability: Rugged ASTM A48 Class 30 cast iron construction with all-stainless steel internals for long-term service life.
• Efficient Air Handling: Features a dedicated vent hole in the bucket for continuous air and CO2 venting.
• Water Hammer Resistance: The robust inverted bucket design is inherently resistant to damage from sudden pressure surges.
• Built-in Protection: Includes an integral strainer to protect the valve and seat from pipeline scale and debris.
• Maintenance Savings: Fully repairable design allows for in-line servicing to minimize system downtime.

What is the maximum pressure for the Armstrong 880-3/4-20?
This specific configuration is designed for a maximum operating pressure of 20 PSI to match its 3/16" orifice capacity, though the vessel itself can handle higher pressures.

Does this trap vent air automatically?
Yes, the inverted bucket mechanism provides continuous automatic venting of air and non-condensable gases at steam temperature, preventing system lag.

Can the Series 880 be installed vertically?
The Series 880 is specifically engineered for horizontal installation with side-inlet and side-outlet connections.

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.