
881-075-125 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $189.95 | Condition is New – Open box, Armstrong 881-075-125 Steam Trap, 125 PSI, 3/4" FNPT, 450 F, Cast Iron, Inverted, shipping cost = $14.50 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $367.69 | Condition is New, ARMSTRONG INTERNATIONAL 881-075-125 Steam Trap,Stainless Steel,125 psi,3/4in 36Y, FREE SHIPPING | ![]() |
![]() | $387.99 | Condition is New, Armstrong International 881-075-125 Steam Trap, 125 Psi, 450F, 5 In. L, FREE SHIPPING | ![]() |

The Armstrong International 881-075-125 steam trap is a high-performance, 125 3/4 Fernco NPT (Female National Pipe Thread) trap designed for use in steam systems. This cast iron inverted trap is engineered with durability and efficiency in mind, making it an ideal choice for industrial and commercial applications.
The Armstrong International 881-075-125 steam trap features a 450-pound working pressure rating, ensuring it can handle the demands of heavy-duty steam processes. Its cast iron construction provides excellent heat resistance and durability, allowing it to withstand the rigors of continuous steam use.
The inverted design of this steam trap offers several advantages. It allows for easy installation in confined spaces and ensures that condensate is always draining towards the drain line, minimizing the risk of flooding and water hammer. Additionally, the inverted design helps to reduce the risk of air ingression, maintaining the steam purity and efficiency of your system.
The 881-075-125 steam trap utilizes a thermostatic disc element for automatic operation. This element expands when steam reaches a certain temperature, opening the trap to release condensate. Once the steam cools, the disc contracts, closing the trap, preventing steam loss.
This steam trap also includes a removable strainer basket that can be easily accessed for cleaning and maintenance. The basket helps to filter out debris and impurities from the condensate, ensuring that your system remains free of contaminants that could cause damage or reduce efficiency.
Installation of the Armstrong International 881-075-125 steam trap is straightforward, thanks to its NPT connection. This thread type is widely used and readily available, making it easy to find the necessary piping components for installation.
In summary, the Armstrong International 881-075-125 steam trap is a robust, efficient, and reliable solution for managing condensate in steam systems. Its cast iron construction, inverted design, and automatic thermostatic operation make it an indispensable tool for maintaining optimal steam system performance.
The Armstrong International 881-075-125 steam trap is a 125 3/4 fnpt 450 cast iron inverted type. This type of steam trap is commonly used in steam heating systems to remove air and non-condensable gases. Here are some pros and cons of buying this steam trap:
Pros:1. Durable: The trap is made of cast iron, which is known for its high durability and resistance to corrosion.
2. Efficient: The inverted bucket design ensures efficient operation, as the condensate drains continuously, reducing the load on the heating system.
3. Easy to Install: The trap comes with a threaded connection, making it easy to install and replace.
4. Leak-free: The trap's design features a seal that prevents leakage, ensuring that the steam system remains sealed and efficient.
5. Long Service Life: With proper maintenance, the trap can last for many years, reducing the need for frequent replacements.
Cons:1. Cost: The cost of the Armstrong International 881-075-125 steam trap may be higher than some other models on the market.
2. Maintenance: While the trap is designed to be leak-free, it still requires regular maintenance to ensure optimal performance.
3. Weight: The trap's cast iron construction makes it heavier than some other models, which can make installation and transportation more challenging.
Conclusion:The Armstrong International 881-075-125 steam trap is a high-quality, durable, and efficient steam trap that is ideal for use in steam heating systems. Its inverted bucket design ensures efficient operation, and its cast iron construction ensures long-lasting durability. However, the trap's cost and weight may be disadvantages for some users.
Recommendation:If you are looking for a reliable and efficient steam trap that can withstand the rigors of a steam heating system, the Armstrong International 881-075-125 steam trap is an excellent choice. Its durable cast iron construction, efficient operation, and leak-free design make it a wise investment for any steam heating system. However, be prepared for the higher cost and weight compared to some other models.
Details:
Operating pressure: 125 allowable pressure - maximum: 250 max. Condensate capacity: 950 max. Also, some of the blue paint rubbed off on inside box. Application: steam trap type: inverted configuration: in-line body material: cast float stainless number of ports: 2 port types included: air connection size: 3/4 gender: female npt max.
The box shows wear from where the top bolt poked through end of. This steam trap is new in its original box.
specifications maxohvac:
- brand: Armstrong International
- mpn: 881-075-125
- type: Steam Trap
- country of origin: United States
payments maxohvac:
- other
- wallet: paypal
- credit card: visa
returns maxohvac:
- paid by: buyer
- method: money back
- time: 30 days
- policy: returns accepted
general maxohvac:
- category: Business & Industrial > Hvac Refrigeration
offer maxohvac:
- options: ship-to-home
- availability: in stock
- sold #: 14
- in stock #: 3
- prices: $189.95–$387.99
- item condition:
- New – Open box
- New
- started: january 29, 2026
shipping maxohvac:
- type: fixed
- carrier: usps
- class: standard
- service: usps ground advantage
- transit: 4-7 days
seller maxohvac:
- city: saint louis, missouri
- rating: 100.0%
- # reviews: 6844
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