Armstrong International 812-3/4-15 Trap

The Armstrong International 812-3/4-15 Trap is a high-performance inverted bucket steam trap engineered for reliable condensate management in low-pressure steam systems. Featuring a rugged cast iron body and a 3/4" NPT connection, this 812 Series trap is specifically designed for 15 PSI applications with a 5/16" orifice. Its unique leverage system multiplies the force of the bucket to ensure a tight seal against system pressure, while the free-floating stainless steel mechanism prevents friction and wear. Unlike other designs, the inverted bucket design handles dirt and scale effectively as the valve and seat are located at the top of the trap away from settled particles. This unit provides continuous automatic air and CO2 venting at steam temperature, preventing air binding and ensuring efficient heat transfer. Ideally suited for laundry equipment, drip stations, and various HVACR heating processes, the Armstrong 812 offers superior resistance to water hammer and long-term energy savings through precision operation.

• Efficient Condensate Drainage: Specifically tuned for 15 PSI systems to maintain optimal thermal efficiency.
• Dirt-Tolerant Design: The top-mounted orifice stays clear of sediment, utilizing a self-scrubbing action to discharge particles.
• Energy Conservation: Provides a tight water seal that prevents live steam loss during operation.
• Rugged Durability: Cast iron construction resists corrosion, hydronic shock, and heavy-duty wear.
• Maintenance Friendly: The 800 Series internals are fully repairable, allowing for easy field service and extended product life.

What equipment is this steam trap best suited for?
The 812-3/4-15 model is ideal for commercial laundry equipment, small process heaters, and low-pressure steam main drip legs where rapid air venting is required.

Can this trap handle water hammer?
Yes, the Armstrong inverted bucket design is inherently resistant to water hammer and corrosive gases like CO2, making it one of the most reliable choices for industrial steam lines.

Is the 5/16" orifice compatible with higher pressures?
This specific model is calibrated for a maximum operating pressure of 15 PSI. Using it above this rated pressure may prevent the trap from opening correctly due to the differential pressure logic.

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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