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ARMSTRONG INTERNATIONAL

Armstrong International is a manufacturer of steam, air, and hot water system components, with a product history that includes the inverted bucket steam trap—a design the company helped commercialize in the early 20th century. The brand's catalog spans steam traps, air vents, strainers, and related repair kits, serving industrial plants that manage condensate and air removal in steam distribution networks. Armstrong products are commonly specified by plant engineers and maintenance managers for their functional design and material options, which include cast iron and stainless steel constructions. 3G Electric supplies Armstrong International steam traps, air vents, and strainers globally, offering technical specifications and logistics support for procurement teams. The inverted bucket steam trap line includes models with FNPT connections from 1/2 in to 1 in, capacity ratings from 600 lb/hr to 3,500 lb/hr, and maximum pressure ratings from 125 psi to 650 psi. Temperature limits reach 450°F for cast iron units and up to 600°F for stainless steel variants. Corrosion-resistant models use stainless steel bodies for applications where condensate quality or environmental conditions demand higher material durability. Strainer options are available on select models, and inline strainers with 304 stainless steel bodies and perforated screens are also part of the Armstrong offering. These components are used in steam headers, tracer lines, process equipment, and HVAC systems where reliable condensate removal is required. 3G Electric maintains inventory and provides global shipping for Armstrong International products, supporting maintenance, repair, and operations (MRO) requirements. The company's role as a distributor includes offering product data, cross-referencing, and order fulfillment for customers seeking specific Armstrong part numbers or equivalent specifications. Armstrong International's product documentation typically includes details on installation orientation, connection type, and operating limits, which 3G Electric makes available to buyers. For procurement specialists, 3G Electric provides a single source for Armstrong steam traps and strainers, reducing the need to manage multiple suppliers for these components. The product range covers common industrial sizes and pressure classes, with options for strainer inclusion and material selection. Armstrong International's engineering focus on steam system efficiency aligns with plant goals to reduce energy loss and maintain process reliability. 3G Electric's catalog includes Armstrong part numbers such as 883-075-250, 1811-075-400, and 1822-100-250, among others, with specifications listed for each. This allows maintenance teams to identify replacement traps or spares by matching connection size, capacity, and pressure rating. The availability of corrosion-resistant models extends service life in challenging environments, while cast iron units offer a cost-effective solution for standard steam applications. 3G Electric supports the Armstrong International line with global logistics, enabling customers to obtain these components regardless of location. The distributor's technical resources include specification sheets and compatibility information, assisting engineers in selecting the correct trap for their system parameters. Armstrong International's reputation in steam trapping is built on decades of application experience, and 3G Electric continues to supply these products to industrial markets worldwide.

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About ARMSTRONG INTERNATIONAL

Armstrong International is a manufacturer of steam, air, and hot water system components, with a product history that includes the inverted bucket steam trap—a design the company helped commercialize in the early 20th century. The brand's catalog spans steam traps, air vents, strainers, and related repair kits, serving industrial plants that manage condensate and air removal in steam distribution networks. Armstrong products are commonly specified by plant engineers and maintenance managers for their functional design and material options, which include cast iron and stainless steel constructions. 3G Electric supplies Armstrong International steam traps, air vents, and strainers globally, offering technical specifications and logistics support for procurement teams. The inverted bucket steam trap line includes models with FNPT connections from 1/2 in to 1 in, capacity ratings from 600 lb/hr to 3,500 lb/hr, and maximum pressure ratings from 125 psi to 650 psi. Temperature limits reach 450°F for cast iron units and up to 600°F for stainless steel variants. Corrosion-resistant models use stainless steel bodies for applications where condensate quality or environmental conditions demand higher material durability. Strainer options are available on select models, and inline strainers with 304 stainless steel bodies and perforated screens are also part of the Armstrong offering. These components are used in steam headers, tracer lines, process equipment, and HVAC systems where reliable condensate removal is required. 3G Electric maintains inventory and provides global shipping for Armstrong International products, supporting maintenance, repair, and operations (MRO) requirements. The company's role as a distributor includes offering product data, cross-referencing, and order fulfillment for customers seeking specific Armstrong part numbers or equivalent specifications. Armstrong International's product documentation typically includes details on installation orientation, connection type, and operating limits, which 3G Electric makes available to buyers. For procurement specialists, 3G Electric provides a single source for Armstrong steam traps and strainers, reducing the need to manage multiple suppliers for these components. The product range covers common industrial sizes and pressure classes, with options for strainer inclusion and material selection. Armstrong International's engineering focus on steam system efficiency aligns with plant goals to reduce energy loss and maintain process reliability. 3G Electric's catalog includes Armstrong part numbers such as 883-075-250, 1811-075-400, and 1822-100-250, among others, with specifications listed for each. This allows maintenance teams to identify replacement traps or spares by matching connection size, capacity, and pressure rating. The availability of corrosion-resistant models extends service life in challenging environments, while cast iron units offer a cost-effective solution for standard steam applications. 3G Electric supports the Armstrong International line with global logistics, enabling customers to obtain these components regardless of location. The distributor's technical resources include specification sheets and compatibility information, assisting engineers in selecting the correct trap for their system parameters. Armstrong International's reputation in steam trapping is built on decades of application experience, and 3G Electric continues to supply these products to industrial markets worldwide.

Common Applications

  • Steam distribution headers — Armstrong International inverted bucket steam traps (e.g., 883-075-250) for condensate removal at pressures up to 250 psi.
  • Corrosive condensate systems — Stainless steel Armstrong International traps (e.g., 1811-075-400) for resistance to acidic or high-purity condensate.
  • High-pressure steam lines — Armstrong International 1822-100-250 traps rated to 250 psi and 600°F for superheated steam applications.
  • Tracer line drainage — Armstrong International 1811 series traps with 1/2 in or 3/4 in connections for freeze protection and process temperature maintenance.
  • Steam system strainer protection — Armstrong International inline strainers (e.g., 304 stainless steel, 3/4 in NPT) to capture debris upstream of traps and valves.
  • HVAC and process equipment — Armstrong International inverted bucket traps for condensate removal from heat exchangers, coils, and unit heaters.

Guides & Resources

Frequently asked questions

Common questions about ARMSTRONG INTERNATIONAL from 3G Electric.

What is the maximum pressure rating for Armstrong International inverted bucket steam traps?

Armstrong International inverted bucket steam traps are available with maximum pressure ratings from 125 psi to 650 psi, depending on the model. For example, the cast iron 883-075-250 is rated to 250 psi, while the stainless steel 1811-075-400 handles up to 400 psi. The 1822-100-250 model is rated to 250 psi, and another stainless steel variant reaches 650 psi. These ratings reflect the pressure of the steam system at the trap inlet. Selection should consider the maximum operating pressure and temperature of the application, as well as the required condensate capacity. Always verify the specific model's pressure-temperature limits before installation.

What materials are used in Armstrong International corrosion-resistant steam traps?

Armstrong International corrosion-resistant inverted bucket steam traps feature stainless steel bodies and internal components. This construction provides resistance to corrosion from condensate and environmental factors. Models such as the 1811-075-400 and 1822-100-250 use stainless steel for the body, bucket, and valve mechanism. Stainless steel is suitable for applications where carbon steel or cast iron would degrade, such as systems with aggressive condensate or high-purity requirements. The traps are available with FNPT connections in sizes from 1/2 in to 1 in. These traps are designed for horizontal installation and in-line configuration.

What is the difference between Armstrong International cast iron and stainless steel steam traps?

Armstrong International cast iron steam traps, such as the 883-075-250, are typically used in standard steam applications where corrosion is not a primary concern. They offer a cost-effective solution for pressures up to 250 psi and temperatures up to 450°F. Stainless steel traps, like the 1811-075-400 and 1822-100-250, provide enhanced corrosion resistance and can handle higher pressures and temperatures, with some models rated to 650 psi and 600°F. Stainless steel traps are often specified for systems with corrosive condensate, outdoor installations, or where longer service life is desired. Both types use the inverted bucket operating principle and are available with FNPT connections.

Are strainers included with Armstrong International steam traps?

Some Armstrong International steam traps include an integral strainer, while others do not. For instance, the cast iron 883-075-250 model comes with a strainer included. The corrosion-resistant stainless steel models, such as the 1811-075-400 and 1822-100-250, are supplied without a strainer. If a strainer is required, it can be specified separately or an inline strainer can be installed upstream. Armstrong International also offers standalone inline strainers, such as the 304 stainless steel unit with a 3/4 in NPT connection and perforated screen. The choice depends on the cleanliness of the steam system and maintenance practices.

What is the capacity range of Armstrong International inverted bucket steam traps?

Armstrong International inverted bucket steam traps are available with condensate capacity ratings from 600 lb/hr to 3,500 lb/hr. The cast iron 883-075-250 has a capacity of 3,500 lb/hr, while the stainless steel models range from 600 lb/hr to 1,500 lb/hr. Capacity is determined by the orifice size and pressure differential across the trap. When selecting a trap, the required capacity should be based on the maximum condensate load, including start-up conditions and safety factors. The capacity ratings provided are for specific pressure differentials; consult the product data for detailed capacity charts.

What connection sizes are available for Armstrong International steam traps?

Armstrong International inverted bucket steam traps are offered with FNPT connections in sizes including 1/2 in, 3/4 in, and 1 in. The 1/2 in size is available in models like the 1811-050-400 and 1811-050-200, with capacities of 600 lb/hr and 900 lb/hr respectively. The 3/4 in size includes the cast iron 883-075-250 and stainless steel 1811-075-400. The 1 in size is represented by the 1822-100-250 and another model rated to 650 psi. These sizes cover common steam line connections in industrial plants. Adapters may be used to transition between sizes if necessary.