Armstrong International D501381 880 Series Inverted Bucket Steam Trap 1/2 inch NPT 15 PSI - D501381
The Armstrong International Model 881, part number D501381, is a robust inverted bucket steam trap, configured for in-line horizontal installation. Designed primarily for efficient condensate drainage in varied steam-using equipment, this steam trap excels in durability and operational efficiency.
The Armstrong International Model 881, part number D501381, is a robust inverted bucket steam trap, configured for in-line horizontal installation. Designed primarily for efficient condensate drainage in varied steam-using equipment, this steam trap excels in durability and operational efficiency.
Features
- Capable of handling pressures up to 250 psi with a condensate capacity up to 4400 lb/hr.
- Incorporates an integral strainer and a unique leverage mechanism for superior performance.
- Constructed from high-quality cast iron, ensuring extended service life and maintenance savings.
Specifications
| MPN |
D501381 |
| Model |
881 |
| Series |
880 Series |
| Brand |
Armstrong International |
| Body Material |
Cast Iron |
| Connection Size |
1/2 inch NPT |
| Maximum Pressure |
15 PSI |
| Orifice Size |
1/4 inch |
| Weight |
6.10 lb |
What Our Experts Think
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15 PSI Capacity – Ideal for low-pressure steam systems.
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1/2" NPT Connection – Standard threading for easy installation.
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Inverted Bucket Design – Provides efficient condensate removal while minimizing steam loss.
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Durable Construction – Built to withstand demanding industrial and commercial environments.
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Reliable Performance – Reduces water hammer and improves steam system efficiency.
Q&A
Q: What applications is this steam trap best suited for?
A: Ideal for low-pressure steam heating systems, radiators, process equipment, and industrial applications requiring efficient condensate drainage.
Q: How does an inverted bucket steam trap work?
A: It uses a buoyant bucket mechanism to open and close the valve, allowing condensate to discharge while preventing steam loss.
Q: What are the benefits of cast iron construction?
A: Provides durability, corrosion resistance, and long-lasting performance in steam systems.
Q: Is this steam trap energy-efficient?
A: Yes, it effectively removes condensate while minimizing steam loss, improving overall system efficiency.
Maintenance Tips
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Inspect for Leaks – Check pipe connections and seals for steam or condensate leaks.
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Monitor Trap Operation – Ensure proper condensate drainage without excessive steam loss.
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Clean the Strainer – Regularly remove debris to prevent clogging.
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Check Bucket Mechanism – Ensure smooth movement and proper sealing.
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Verify Pressure Rating – Operate within the 15 PSI limit for optimal efficiency.
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Test Discharge Cycle – Confirm consistent performance to prevent water hammer.
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Schedule Routine Maintenance – Periodic checks extend trap lifespan and efficiency.
