WATLOW ANSI Flange Immersion Heaters


Watlow’s immersion heaters are designed primarily for direct immersion in liquids such as water, oils, solvents and process solutions, molten materials as well as air and gases. By generating all the heat within the liquid or process, these heaters are virtually 100 percent energy efficient. These versatile heaters can also be formed and shaped into various geometries for radiant heating and contact surface heating applications. UL® and CSA component recognized elements are available.

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Product Description

Product Description

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 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.

Specification

Specification

Material Maximum Operating Temperatures Maximum Watt Densities
°F °C W/in2 W/cm2
Alloy 800 1600 870 100 15.5
Stainless steel 1200 650 100 15.5
steel 750 400 100 15.5
N/A 350 175 100 15.5
  • A conventional round tubular 10-inch ANSI flange can be replaced by a 6-inch ANSI FIREBAR flange
  • Watt densities to 100 W/in² (15.5 W/cm²)
  • Wattages to three megawatts
  • UL® and CSA component recognition to 600VAC
  • 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)
  • FIREBAR flange heaters deliver more killowatts in smaller bundles
  • Alloy 800/840 sheath temperatures to 1600°F (870°C)
  • Applications

    Applications

  • Deionized water
  • Demineralized water
  • Clean water
  • Process water
  • Potable water
  • Industrial water rinse tanks
  • Vapor degreasers
  • Hydraulic oil, crude, asphalt
  • Lubricating oils at API specified watt densities
  • Air and gas flow
  • Chemical baths
  • Process air equipment
  • Boiler equipment
  • Freeze protection of any fluid
  • Anti-freeze (glycol) solutions
  • Paraffin
  • Features & Benefits

    Features & Benefits

    Features Benefits
    ANSI and ANSI compatible 2, 2½, 3 thru 48 inch flanges
  • Provides appropriate heater size-to-application and fit
  • Element sheath and flange materials
  • Meets your application needs
  • Integral thermowells
  • Provides convenient temperature sensor insertion and replacement without draining the fluid being heated
  • Standard, general purpose terminal enclosur.
  • Offers easy access to wiring
  • All units are inspected and/or tested
  • Ensures element-to-flange pressure seals do not leak
  • Drilled and tapped eyebolt holes or lift lugs for eye bolts on 10 inch and larger flange heaters
  • Facilitates lifting during installation
  • WATROD hairpins are repressed (recompacted)
  • Provides improved heater life, insulation resistance and heat transfer
  • Element support(s)
  • Provides proper element spacing to maximize heater performance and life
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