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Screw Plug Immersion Heaters

cartridge heaters

Screw Plug Immersion Heaters consist of tubular elements welded or brazed into a threaded screw plug which can then be inserted into a threaded opening in a tank wall or through a mating full or half coupling.

Cartridge heaters are an excellent choice to use as a conductive source for heating solid metal plates, blocks and dies or as a convective heat source for use in a variety of liquids and gases. Cartridge heaters can be used in a vacuum atmosphere with proper design guidelines.

Typical Applications

  • Caustic Solutions
  • Clean Water
  • Degreasing Solutions
  • Demineralized Water
  • Dionized Water
  • Forced Air & Gases
  • Fuel Oils
  • Heat Transfer Oils
  • Lightweight Oils
  • Liquid Paraffin
  • Medium Weight Oils
  • Process Water

Sheath Materials

  • Incoloy®
  • Stainless Steel

Screw Plug Materials

  • Brass
  • Stainless Steel
  • Steel

Watt Densities for Typical Applications

  • 8 watts/in2 (1.3 watts/cm2) - Typical Applications: Fuel Oils (Bunker C and Number 6)
  • 15 watts/in2 (2.3 watts/cm2) - Typical Applications: Medium Weight Oils, Heat Transfer Oils
  • 16 watts/in2 (2.5 watts/cm2) - Typical Applications: Medium Weight Oils, Heat Transfer Oils, Liquid Paraffin
  • 23 watts/in2 (3.6 watts/cm2) - Typical Applications: Forced Air & Gases, Caustic Solutions
  • 48 watts/in2 (7.5 watts/cm2) - Typical Applications: Process Water
  • 60 watts/in2 (9.3 watts/cm2) - Typical Applications: Clean Water, Deionized Water, Demineralized Water