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Armstrong Inverted Bucket Traps

Additional Information

The 800 Series cast iron inverted bucket steam trap is designed for reliable condensate drainage in horizontal installations. Featuring a free-floating stainless steel mechanism and a top-mounted discharge orifice, this trap delivers efficient operation with continuous air and CO₂ venting at steam temperature.

 

Inverted bucket technology is widely regarded as one of the most dependable steam trap designs, providing long service life, energy efficiency, and resistance to water hammer. The unique leverage system multiplies bucket force to open the valve against system pressure, while the top-mounted mechanism prevents dirt buildup and allows debris to be discharged during normal operation. A surrounding water seal minimizes live steam loss, and the rugged cast iron body ensures durability. All units are fully repairable, helping reduce maintenance and replacement costs over time.

In-stock orders eligible for small-pack shipments placed before 2:00 PM EST, Monday through Friday, will ship the same day. If ordered after 2:00PM EST, it will ship the following business day.

Items to be returned must be approved by Power Plus International, Inc. DBA Boiler USA, and may be subjected to a restocking fee

Notice: Due to the uncontrollable metal costs, all prices and delivery times are subject to change on a daily basis.

PPI™ and Power Plus International™, and related marks and logos displayed on the Site, are our trademarks and may not be used in any way without our prior express written permission. Nothing contained on the Site shall be construed as granting, by implication, estoppel or otherwise, any license or right to use any of our marks displayed on the Site without our prior express written permission. All other trademarks not owned by us that appear on this Site are the property of their respective owners.

*NOTE: The products described herein are not manufactured by Patterson-Kelley nor is Power Plus International, Inc. DBA Boiler USA in any way associated or affiliated with "PK", Patterson-Kelley, or Harsco Corporation.

Contact Us Directly:
Mailing Address:
  • Power Plus International, Inc. DBA Boiler USA
  • 143 McDonough Parkway
  • McDonough, GA 30253
Contact Us Directly:
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© 2026 Power Plus International, Inc. d/b/a Boiler USA, All Rights Reserved.
Mailing Address:
  • Power Plus International, Inc. DBA Boiler USA
  • 143 McDonough Parkway
  • McDonough, GA 30253
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