Armstrong International Parts

Armstrong International parts keep steam traps, condensate pumps, and steam specialty equipment running after years of service in commercial and industrial heating systems. Armstrong International has manufactured steam and condensate handling equipment for the trade for well over a century, and its products remain common in schools, hospitals, manufacturing plants, and multi-family buildings running steam or high-temperature hot water systems. This category covers internal repair components for that equipment, including trap mechanisms, valve seats, strainer screens, and pump repair kits sized to specific Armstrong International models. Facility technicians and mechanical contractors turn to these parts when a steam trap starts blowing through, a condensate pump loses prime, or a valve seat wears past the point of holding pressure. Rebuilding equipment with matched internal parts is almost always more economical than full replacement, particularly on larger commercial steam traps and pump units where the housing itself is still sound.

Subcategories

• Steam Trap Repair Parts: Steam trap repair parts include the internal mechanisms, discs, and seats that wear out inside inverted bucket, float and thermostatic, and thermodynamic steam traps. A failed trap either blows steam continuously, wasting energy, or fails closed and backs up condensate into the system. Rebuilding with the correct internal kit restores original trap performance without replacing the whole body, which is typically welded or flanged into the piping.
• Condensate Pump Parts: Condensate pump parts cover the mechanical float, switch, and pump-head components inside Armstrong International condensate return units. Facilities technicians replace these when a pump loses prime, short cycles, or fails to return condensate to the boiler feed system. Matching float size and switch type to the specific pump model is essential, since Armstrong International's mechanical and electric pump lines use different internal designs.
• Valves and Strainers: Valves and strainers protect steam and condensate equipment from scale, sediment, and debris that would otherwise damage downstream traps and pumps. Replacement screens and seats in this category are sized to match specific valve and strainer bodies rather than sold as universal fits. A clogged or torn strainer screen is a common, easily overlooked cause of reduced flow through an otherwise healthy steam system.
• Gauges and Controls: Gauges and controls include the pressure and temperature indicators, along with the electrical controls, that monitor and regulate Armstrong International steam and condensate equipment. Facility staff rely on these components to catch a developing problem, such as a rising condensate temperature, before it causes trap or pump failure. Replacing a worn gauge with the correct pressure range keeps readings accurate for both troubleshooting and routine monitoring.

Buying Guide

Identify the exact Armstrong International model number stamped on the equipment body before ordering repair parts, since internal components rarely interchange across different trap or pump series even when the housings look similar. Steam trap and condensate pump lines have been revised over the decades, so a model number search is more reliable than matching by physical appearance alone.

Consider the operating pressure and temperature of the system before selecting internal parts, since Armstrong International parts are engineered for specific pressure ratings and substituting a lower-rated component can cause premature failure or an unsafe condition. When working through Armstrong International parts for a commercial steam system, coordinate trap and pump repairs with a broader system inspection, since a single failed trap upstream can be the root cause of problems technicians see elsewhere in the loop.

For facilities running steam on a tight maintenance budget, rebuilding existing trap and pump bodies with genuine internal kits is typically far less expensive than full unit replacement, provided the housing itself shows no cracking or corrosion. Stocking common repair kits for the trap and pump models installed most often across a facility's steam system cuts down on emergency service calls during heating season.

Frequently Asked Questions

How do I know if a steam trap has failed open or closed?

A trap that has failed open will blow live steam continuously, which is usually audible and creates a hissing or roaring sound at the trap. A trap that has failed closed will back up condensate, often causing water hammer or reduced heating output in the space it serves.

Can Armstrong International trap parts be used in a non-Armstrong trap body?

No, internal trap components are engineered to match the exact geometry and pressure rating of their specific trap body, so parts don't cross over between manufacturers. Always match repair kits to the trap body's model number rather than its general type.

How often should condensate pumps be serviced?

Most facilities inspect condensate pumps at the start of each heating season and monitor float and switch operation throughout the year, since these components see constant cycling. A pump that short cycles or runs longer than normal often needs float or switch service before full failure occurs.

What causes a strainer screen to need frequent replacement?

Frequent strainer clogging usually points to a problem upstream, such as scale breaking loose from aging piping or a boiler that isn't being treated with the correct water chemistry. Replacing the screen without addressing the root cause typically leads to repeat clogging.

Is it worth rebuilding an old steam trap instead of replacing it?

Rebuilding is usually the more economical choice when the trap body itself is free of cracks, corrosion, or thread damage, since the body is often the most expensive part of the assembly. A trap with a damaged or leaking body is a better candidate for full replacement.