Armstrong D1175-5 Model 75-A3 - A Series 3/4 75 psi Cast Iron F&T Trap - D1175-5
The Armstrong float and thermostatic (F&T) steam trap, model 75-A3, has a 3/4 trap connection in a same side configuration. This allows steam to enter from one side while condensate discharges from the same side. This design is ideal for industrial applications.
The Armstrong float and thermostatic (F&T) steam trap, model 75-A3, has a 3/4 trap connection in a same side configuration. This allows steam to enter from one side while condensate discharges from the same side. This design is ideal for industrial applications.
Features
- Cast iron construction for durability
- Maximum operating pressure of seventy-five psi
- Capacity for one thousand eight hundred seventy pounds per hour
Specifications
| MPN |
D1175-5 |
| Model |
75-A3 |
| Series |
A Series |
| Brand |
Armstrong International |
| Steam Trap Type |
Float & Thermostatic |
| Body Material |
Cast Iron |
| Steam Trap Connection Size |
3/4 inch |
| Steam Trap Mounting |
Same Side |
| Max Pressure |
75 PSI |
| Weight |
9.50 pounds |
What Our Experts Think
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75 PSI Capacity – Handles medium-pressure steam systems effectively.
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Float & Thermostatic (F&T) Design – Ensures continuous drainage and air venting.
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3/4" NPT Connection – Standard threading for quick installation.
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Rugged Cast Iron Construction – Built to withstand demanding industrial environments.
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Reliable Performance – Prevents steam locking and improves system efficiency.
Q&A
Q: What applications is this F&T trap best suited for?
A: Ideal for commercial and industrial steam heating systems, heat exchangers, unit heaters, and other applications requiring consistent condensate drainage.
Q: How does a float & thermostatic steam trap work?
A: The float mechanism removes condensate as it collects, while the thermostatic element vents air and non-condensable gases, ensuring efficient operation.
Q: What are the benefits of cast iron construction?
A: The heavy-duty cast iron body enhances durability and longevity, making it suitable for high-temperature and high-pressure steam systems.
Q: Is this steam trap energy-efficient?
A: Yes, it minimizes steam loss, improving system efficiency and reducing energy costs.
Maintenance Tips
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Inspect for Leaks – Check pipe connections and seals for steam or water leaks.
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Monitor Operation – Ensure proper drainage and trap cycling without excessive steam loss.
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Clean Strainer – Regularly remove debris to prevent clogging and maintain efficiency.
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Check Float & Thermostatic Mechanism – Ensure smooth movement and proper sealing.
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Verify Pressure Limits – Operate within the 75 PSI rating for optimal performance.
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Test Discharge Performance – Confirm consistent condensate removal to prevent water hammer.
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Schedule Routine Maintenance – Periodic inspections extend lifespan and efficiency.
