Small Tank Flange Heater

Small Tank Flange Heater
  • 304 Stainless Steel Element Sheath
  • Carbon Steel Flange Construction
  • 3" to 12" 150# Flange Size
  • Moisture Resistant Terminal Housing (NEMA 4/IP66)
  • Third Party Certified
  • 1 - 25 kW Unit Ratings
  • 240 V, 480 V, or 600 V, Three Phase, Single Circuit
  • 24" (610 mm) Immersion Lengths
  • 5, 10, 20, or 40 w/in² (1, 1.6, 3.5 & 6.2 w/cm2)
  • Standard Over-Temperature Protection - Type J Thermocouple
  • ASME Design and Certification Available
  • Matching Control Panels

Chromalox STFX style units allow heating elements to be changed without draining the tank. This is ideal for smaller, critical system storage units that need to remain filled for continuous operation and storage.


  • No Tank Draining Required - Replaceable style heating elements can be inspected or changed without draining the tank. This reduces costs and production downtime.
  • Quick & Easy Installation - A standard ANSI flange provides a straightforward mating connection with no special modifications required.
  • Stocked Replacement Elements - Standardized heater cores allow for multiple heater element replaceability with a minimum number of parts.
  • Third-Party Certifications - Terminal housings are CSA approved.
  • Easy Element Maintenance - Replaceablestyle elements can be easily changed by one person with no special tooling required.
  • Clean, Pollution-Free Electric Heat - Unlike gas or steam heat, STFX units have no open flames, no additional plumbing connection, quiet operation, and better efficiencies. In addition, they can be precisely controlled and operation is simple.
  • Overtemperature Sensor - Each unit is equipped with a type J thermocouple for overtemperature sensing on the pipe wall.
  • Matching Control Panel - Each unit can be matched with a corresponding control panel to ensure seamless operation.


  • 304 or 316 Stainless Steel Flange
  • 316 or INCOLOY 800 Element Sheath
  • Alternate Voltage and kW Ratings
  • Explosion/Moisture Resistant Terminal Housing
  • Optional direct mounting of Chromalox controls
  • Customized immersion lengths for unique sized tanks.
  • Alternate materials for corrosive applications

STFX units provide replaceable-element design in a compact setting, while providing precise temperature control. Units comply with API- 614 and can be used for such materials as lube oil, fire water storage, water solutions, asphalt, water/glycol, diesel, acidic solutions, ethanol, bio-diesel (B-100), glycerin, animal fats, vegetable oils, fuel oils or similar types of liquids.

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