Tubular and Process Heaters
Multicoil Single- or Double-Ended Elements
Watlow's Tubular heating elements and process assemblies are primarily designed for immersion heating water, oils, viscous materials, solvents, process solutions, air and gases. Elements are generally assembled onto screw plugs or flanges for direct immersion, or placed in a heat exchanger to create a circulation heater.
A wide variety of sheath materials match process substance and operating temperature requirements. WATROD Round Tubular Elements and FIREBAR® Flat Tubular Elements provide the widest choice of size, watt density and sheath temperature ranges to meet the most demanding applications.
The operating temperatures vary up to a maximum of 1800 °F (983 °C) with maximum watt densities of 120 W/in² (18.6 W/cm²), depending on element style and sheath material.
| Products | Applications |
| Screw Plug Heaters | Liquids, Air and Gases |
| Flange Heaters | Liquids, Air and Gases |
| Circulation Heaters | Liquids, Air and Gases |
| Engine Pre-Heaters | Liquids |
| Over-the-Side Heaters | Liquids |
| Duct Heaters | Air and Gases |
| Control Boxes and Thermostats | Temperature Control |
Process Assembly Applications:
- Aggressive Chemicals
- Air, Liquid & Gas Heating
- Analytical Equipment
- Aqueous & Semiaqueous Cleaning
- Clamp-on or Immersion Applications
- Drying Ovens
- Environmental-VOC Abatement
- Fluidized Beds
- Food Dehydration
- Food & Cooking Equipment
- Heat Shrink Tunnels
- Heated Air Knives
- Hot Runner Molds
- In-line Process Heating
- Load Banks
- Low & High Temperature Ovens
- Medical Equipment
- Mold Temperature Control
- Molten Metals
- Pellet Dryers
- Plastic Curing
- Process Air Heating: Duct & Circulation Heaters
- Radiant Heating
- Semiconductor Clean Room Environmental Heating
- Ultrasonic Cleaning
- Vacuum Application
Markets Served:
- Aerospace Equipment
- Analytical Equipment
- Cleaning Equipment
- Environmental Chambers
- Engines & Turbines
- Food & Beverages
- Refrigeration & HVAC Instruments
- Industrial Equipment
- Medical & Dental Equipment
- Other (miscellaneous)
- Furnaces & Ovens
- Petroleum & Chemical
- Packaging Equipment
- Plastics Processing
- Semiconductor & Electronics
- Utilities & Power Plants
Multicoil Single- or Double-Ended Elements
The Multicoil heater from Watlow combines multiple coils and thermocouples, creating a Tubular heater with precise temperature measurement and quick installation. It's the first Tubular heater in the industry with three-phase capability. By providing the ability to go from single-phase to three-phase in a compact package, the three-coil, three-phase heaters offer a lower amperage solution while delivering full power.
The new, patent-pending method of packaging the thermocouple inside the heater sheath with one or more resistance coils gives you the ability to accurately and responsively sense the heaters internal temperature.
Multicoil Tubular heaters can be formed into most configurations to fit your heating needs.
Applications:
- Food Service Equipment
- Medical Equipment
- Plating
- Oven Heating
- Semiconductor Manufacturing
Features and Benefits:
- Three-phase capability results in one element versus three, lower amperage, reduced installation time and lower overall cost.
- Internal thermocouple allows responsive and accurate, internal, high-limit sensing and reduced assembly costs.
- Single-ended allows for mounting in a 1/2 inch NPT or 3/4 inch NPT fitting with three-phase capability.
- Internal construction allows space savings because drilling and tapping of flange is unnecessary; plus, the interior thermocouple eliminates contamination build-up around the external sensing tip, reducing the possibility of false readings.
- Versatile forming capabilities can be formed into virtually any configuration.
- Multiple coil options reduce inventory by allowing dual voltage capability.
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