Armstrong International D501381 880 Series Inverted Bucket Steam Trap 1/2 inch NPT 15 PSI - D501381

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

What Our Experts Think

• 15 PSI Capacity – Ideal for low-pressure steam systems.
• 1/2" NPT Connection – Standard threading for easy installation.
• Inverted Bucket Design – Provides efficient condensate removal while minimizing steam loss.
• Durable Construction – Built to withstand demanding industrial and commercial environments.
• 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

• Inspect for Leaks – Check pipe connections and seals for steam or condensate leaks.
• Monitor Trap Operation – Ensure proper condensate drainage without excessive steam loss.
• Clean the Strainer – Regularly remove debris to prevent clogging.
• Check Bucket Mechanism – Ensure smooth movement and proper sealing.
• Verify Pressure Rating – Operate within the 15 PSI limit for optimal efficiency.
• Test Discharge Cycle – Confirm consistent performance to prevent water hammer.
• Schedule Routine Maintenance – Periodic checks extend trap lifespan and efficiency.