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ARMSTRONG INTERNATIONAL Steam Trap: Cast Iron, 1/2 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max. - Standard Inverted-Bucket Steam Traps
ARMSTRONG INTERNATIONALStandard Inverted-Bucket Steam Traps

ARMSTRONG INTERNATIONAL Steam Trap: Cast Iron, 1/2 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max.

The ARMSTRONG INTERNATIONAL Standard Inverted-Bucket Steam Trap is a cast-iron steam trap with a 1/2 in FNPT connection, rated for 950 lb/hr capacity, 125 psi maximum pressure, and 450°F maximum temperature. It…

SKU 3G-OTH-70390

Also listed as: 881050125 · 881 050 125

Brand
ARMSTRONG INTERNATIONAL
Item
Steam Trap: Cast Iron, 1/2 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max.
Category
Standard Inverted-Bucket Steam Traps
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

ARMSTRONG INTERNATIONAL
Manufacturer Part Number
881-050-125
Type
950 lb/hr, Strainer Included
FNPT
1/2 in
Max.
125 psi
Configuration
In-line
Installation Orientation
Horizontal

Technical Documents

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ARMSTRONG INTERNATIONAL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The ARMSTRONG INTERNATIONAL Standard Inverted-Bucket Steam Trap is a cast-iron steam trap with a 1/2 in FNPT connection, rated for 950 lb/hr capacity, 125 psi maximum pressure, and 450°F maximum temperature. It features an in-line configuration, horizontal installation orientation, and includes a strainer (MPN 881-050-125).

Frequently Asked Questions

What is the Armstrong International 881-050-125 steam trap used for?

This cast-iron inverted-bucket steam trap removes condensate from steam lines in industrial heating and process systems. It handles up to 950 lb/hr at 125 psi and 450°F, with a built-in strainer to protect downstream equipment.

What are the specifications of the Armstrong 881-050-125 steam trap?

The Armstrong International 881-050-125 is a 1/2 in FNPT cast-iron steam trap rated for 950 lb/hr capacity, 125 psi maximum pressure, and 450°F maximum temperature. It has an in-line configuration for horizontal installation and includes a strainer.

Where to buy Armstrong International steam traps worldwide?

3G Electric supplies the Armstrong International 881-050-125 steam trap to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this cast-iron inverted-bucket steam trap.

How to install an Armstrong inverted-bucket steam trap?

Install the Armstrong 881-050-125 horizontally with the inlet and outlet aligned in-line. Ensure the strainer is oriented for easy blowdown. Follow standard piping practices: allow clearance for maintenance and use a bypass for isolation during service.

Used in

Common applications for ARMSTRONG INTERNATIONAL
Chemical processing — Armstrong International inverted-bucket steam traps (e.g., 882-050-125) for condensate removal from heat exchangers.
Food and beverage — Armstrong International corrosion-resistant steam traps (e.g., 1811-050-200) for steam tracing on sanitary lines.
Refining — Armstrong International high-pressure steam traps (e.g., 1822-100-650) for process steam mains.
Commercial HVAC — Armstrong International steam spargers (e.g., MS6-1-1/4") for hot water generation in boiler systems.
Pharmaceutical — Armstrong International stainless-steel steam traps (e.g., 1811-050-400) for clean steam applications.
Power generation — Armstrong International cast-iron steam traps (e.g., 883-075-250) for turbine drain lines.

ARMSTRONG INTERNATIONAL Products

3G Electric supplies ARMSTRONG INTERNATIONAL standard inverted-bucket steam traps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Steam Trap: Cast Iron, 3/4 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 881-075-125)
ARMSTRONG INTERNATIONAL
Steam Trap: Cast Iron, 3/4 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 881-075-125)
Steam Trap: Cast Iron, 1 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 881-100-125)
ARMSTRONG INTERNATIONAL
Steam Trap: Cast Iron, 1 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 881-100-125)
Steam Trap: Cast Iron, 1/2 in FNPT, 1,000 lb/hr, 30 psi Max., 450°F Max., Strainer Included (MPN 881-050-030)
ARMSTRONG INTERNATIONAL
Steam Trap: Cast Iron, 1/2 in FNPT, 1,000 lb/hr, 30 psi Max., 450°F Max., Strainer Included (MPN 881-050-030)
Steam Trap: Cast Iron, 1/2 in FNPT, 1,300 lb/hr, 250 psi Max., 450°F Max., Strainer Included (MPN 882-050-250)
ARMSTRONG INTERNATIONAL
Steam Trap: Cast Iron, 1/2 in FNPT, 1,300 lb/hr, 250 psi Max., 450°F Max., Strainer Included (MPN 882-050-250)
Steam Trap: Cast Iron, 1/2 in FNPT, 2,000 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 882-050-125)
ARMSTRONG INTERNATIONAL
Steam Trap: Cast Iron, 1/2 in FNPT, 2,000 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 882-050-125)
Steam Trap: Cast Iron, 1/2 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max., Strainer Not Included (MPN 811-050-125)
ARMSTRONG INTERNATIONAL
Steam Trap: Cast Iron, 1/2 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max., Strainer Not Included (MPN 811-050-125)

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