Armstrong International 800-3/4-150 Trap

Engineered for high-demand industrial performance, the Armstrong International 800-3/4-150 Trap is a heavy-duty cast iron inverted bucket steam trap designed for horizontal installation in steam-intensive environments. Operating with a maximum pressure of 150 PSI, this 3/4" NPT unit utilizes a #38 orifice to deliver high-capacity condensate drainage (up to 570 lbs/hr) across a wide range of light-to-medium process loads. Unlike many alternatives, the Series 800 features a free-floating stainless steel mechanism with no fixed pivots, significantly reducing mechanical friction and wear. This design places the discharge orifice at the top of the trap, ensuring that dirt and scale are held in suspension until purged, effectively preventing orifice fouling. The inverted bucket steam trap design also provides continuous automatic air venting for CO2 and non-condensable gases at steam temperature, ensuring optimal heat transfer. Built to withstand secondary water hammer, this Armstrong 800 series trap offers a water-sealed discharge that prevents live steam loss, maximizing the thermodynamic efficiency of your steam headers and heat exchangers.

• Optimized Condensate Drainage: The #38 orifice and inverted bucket leverage system ensure rapid response to condensate loads without backing up.
• High Durability: Rugged ASTM A48 Class 30 cast iron body construction provides a 250 psig vessel design rating to handle harsh field conditions.
• Minimal Maintenance: Top-mounted internal hardware prevents debris accumulation, while the stainless steel internal mechanism ensures long-term operational consistency.
• System Efficiency: Integrated automatic air and CO2 venting prevents air binding and maintains steady-state temperatures in process equipment.

• Can this trap be installed in a vertical orientation? No, the 800 series is designed for horizontal in-line installation. For vertical piping, consider the 880 series.
• How does the 150 PSI rating affect capacity? The 150 PSI rating refers to the maximum operating pressure; however, the #38 orifice is sized specifically to manage differential pressure for consistent discharge.
• Is periodic cleaning required for the orifice? Because the orifice is located at the top and utilized a "purging action" during each cycle, it is inherently resistant to dirt accumulation compared to F&T or thermostatic traps.

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.