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A Series

The A Series is a legacy product developed to interchange with ITT/Standard X-Change. Its non-ferrous design (brass shell) is ideal for water to water, including sea water cooling applications. This unit is not recommended for new applications.

Delta T Heat Exchangers is partnered with Thermal Transfer Products, a division of API Heat Transfer, to offer their pre-engineered heat exchangers. If you know your performance requirements, you can contact us by requesting a quote.



  • ITT interchange
  • B or C series is recommended for new applications
  • Competitively priced
  • NPT, SAE O-Ring, SAE flange, or BSPP shell side connections available
  • End bonnets removable for servicing
  • Mounting feet included (may be rotated in 90° increments)

Product Options

  • Non-ferrous construction (water-to-water service)
  • 90/10 copper nickel cooling tubes and bronze end bonnets for sea water service

Customer Focused and Driven

  • All catalog product is available with short lead-times
  • Expert application engineers are available to select and size the right product for your application
  • Custom designs are available


  • Tubes – Copper
  • Hubs & Tubesheets – Steel or brass
  • Shell – Steel or Brass
  • Baffles – Brass
  • End Bonnets – Cast Iron
  • Mounting Brackets – Steel
  • Gaskets – Nitrile Rubber/Cellulose Fiber
  • Nameplate – Aluminum foil


  • Maximum Operating Pressure – Shell Side 300 PSI
  • Maximum Operating Pressure – Tube Side 150 PSI
  • Maximum Operating Temperature 300°F