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Industrial Heaters & Heating > Flanged Immersion Heaters

WATROD and FIREBAR ANSI Flange Immersion Heaters  
Watlow flanged immersion heaters are easy to install and maintain. Designed for heating liquids and gases in tanks and pressure vessels, flanged immersion heaters are ideal for applications requiring higher kilowatts.

Watlow flanged immersion heaters are made with WATROD or FIREBAR tubular elements brazed or welded to a flange. Stock flange heaters are equipped with a general purpose (NEMA 1) terminal enclosure.

Flanged immersion heaters, with FIREBAR elements, also answer the need for liquid immersion applications requiring high kilowatts in small tanks. The FIREBAR element's unique flat surface geometry packs more power in a smaller bundle, with lower watt density, making it especially well-suited for petroleum-based liquid heating applications.

Material
Maximum Operating Temperatures
Maximum Watt Densities
°F
°C
W/in2
W/cm2
Incoloy®
1600
870
100
15.5
Stainless Steel
1200
650
100
15.5
Steel
750
400
100
15.5
Copper
350
175
100
15.5

Typical Applications
Low Carbon Steel Sheath
Applications include fluid heat transfer media, tar, high to low viscosity petroleum oils, asphalt, wax, molten salt, and other solutions not corrosive to a steel sheath.

  • Steel Sheath Heaters 8 watts/sq.in.
    Applications: Fuel Oils (Bunker C and Number 6)
  • Steel Sheath Heaters 15 watts/sq.in.
    Applications: Fuel Oils (Number 4 and 5)
  • Steel Sheath Heaters 23 watts/sq.in.
    Applications: Lightweight Oils, Heat Transfer Oils, Degreasing Solutions

Copper Sheath
Mainly used in clean water heating for washrooms, showers, rinse tanks and freeze protection of storage tanks.

  • Copper Sheath Heaters 60 watts/sq.in.
    Applications: Clean Water

Incoloy® 800 Sheath
A Nickel (30-35%), Chromium (19-23%), Iron alloy. The high nickel content of this alloy contributes to its resistance to scaling and corrosion. Used in air heating and immersion heating of potable water and other liquids that are not corrosive to an Incoloy® 800 sheath

  • Incoloy Sheath Heaters 16 watts/sq.in.
    Applications: Heat Transfer Oils, Liquid Paraffin
  • Incoloy Sheath Heaters 23 watts/sq.in.
    Applications: Forced Air, Caustic Solutions, Degreasing Solutions
  • Incoloy Sheath Heaters 48 watts/sq.in.
    Applications: Process Water

316 Stainless Steel Sheath
A Chromium (16-18%), Nickel (11-14%), Iron Alloy with Molybdenum (2-3%) added to improve corrosion resistance in certain environments, especially those that would tend to cause pitting due to the presence of chlorides. Applications include deionized water.

  • 316 Stainless Steel Sheath Heaters 60 watts/sq.in
    Applications: Deionized Water




Channel Strip Heaters

Specifications

  • Watt densities to 100 W/in2 (15.5 W/cm2)
  • Wattages to three megawatts
  • UL® and CSA component recognition to 600VAC
  • Incoloy® sheath temperatures to 1600°F (870°C)
  • Passivated 316 stainless steel sheath temperatures to 1200°F (650°C)
  • 304 stainless steel sheath temperatures to 1200°F (650°C)
  • Steel sheath temperatures to 750°F (400°C)
  • Copper sheath temperatures to 350°F (175°C)
  • FIREBAR flange heaters deliver more killowatts in smaller bundles
  • A conventional round tubular 10-inch ANSI flange can be replaced by a 6-inch ANSI FIREBAR flange

Contact us for assistance with your application!


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