Armstrong International 880-3/4-150 Steam Trap

The Armstrong International 880-3/4-150 Steam Trap is a high-performance inverted bucket steam trap engineered for reliable condensate drainage in demanding HVACR and industrial steam systems. This series 880 cast iron model features a 3/4" NPT connection and is designed to operate efficiently up to a 150 PSI maximum working pressure. Built with a robust ASTM A48 Class 30 body and an integral strainer, it effectively protects the #38 orifice and internal stainless steel mechanism from scale and debris. Known for its energy-saving capabilities, the inverted bucket design provides a water seal that prevents live steam loss while ensuring continuous air venting. Its in-line horizontal configuration and free-floating leverage system minimize wear and friction, making it an ideal choice for process equipment, laundry machines, and steam drip legs. By maintaining a clean discharge orifice at the top of the body, this trap resists water hammer and ensures long-term system efficiency and operational savings.

• Superior Reliability: The inverted bucket mechanism is resistant to water hammer and corrosion for extended service life.
• Enhanced Protection: Includes a stainless steel integral strainer to prevent dirt and scale from clogging the valve and seat.
• Energy Efficient: Features a unique water seal that prevents the loss of live steam during discharge.
• Maintenance Friendly: The cast iron construction and repairable internal components allow for simplified on-site service and part replacement.
• Automatic Air Venting: Continuously removes air and CO2 at steam temperature to prevent air binding and system lag.

• What causes an inverted bucket trap to lose its prime? Loss of prime typically occurs due to sudden pressure drops that flash condensate into steam; re-prime by closing the outlet valve briefly to accumulate new condensate.
• Can this trap be used in superheated steam applications? Yes, Armstrong inverted bucket traps are well-suited for superheated steam as they maintain a water seal and are not subject to the temperature limitations of thermostatic elements.
• Is the strainer screen replaceable? Yes, the integral strainer located in the 880 series body can be removed for cleaning or replaced to ensure optimal flow and protection.

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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