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Tube Bundles To Fit All OEM Hot Water Storage Tanks

Additional Information

Tank heaters are constructed using a U-tube bundle design, allowing a heating medium—such as steam or hot water—to circulate through the tubes while the surrounding tank fluid is heated through natural convection. This configuration accommodates thermal expansion and contraction across a wide range of temperature variations, reducing stress on the bundle and extending service life. The U-tube design also enhances durability in demanding applications where temperature fluctuations are common.

 

Standard construction includes a fabricated carbon steel collar with optional stainless steel upgrades. Tube sheets are fabricated carbon steel with options for stainless steel, 90/10 copper-nickel, or brass. Tubes are typically copper, with stainless steel, 90/10, or 70/30 copper-nickel available upon request. Bonnets are cast iron, with optional cast 316 stainless steel or cast bronze. Tube-side pressure ratings are 150 PSI for 4” through 8” diameters and 125 PSI for 10” through 14” diameters, with a maximum temperature of 375°F. Tank-side ratings are 150 PSI at 375°F.

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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