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| Tubular Heaters |
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Watlow's WATROD tubular heater elements and flat FIREBAR elements 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 available. |
 Click here to find a Watlow heater or controller comparable to your Chromalox® part. |
| Products |
Available Sheath Diameters |
Sheath Materials |
Maximum Sheath Temperature |
Typical Maximum Watt Densities* |
| mm |
in. |
| WATROD Tubular® |
6.6, 8.0, 9.5, 10.9, 12.0, 12.4, 15.9 |
0.260, 0.315, 0.375, 0.430, 0.475, 0.490, 0.625 |
Inconel® |
To 815°C (1600°F) |
To 18.6 W/cm² (120 W/in²), dependent on the sheath material, watt density and heater application |
| Incoloy® |
To 815°C (1600°F) |
| 304SS |
To 650°C (1200°F) |
| 316SS |
To 815°C (1600°F) |
| Steel |
To 400°C (750°F) |
| Copper |
To 175°C (350°F) |
| Single-Ended Tubular |
9.5, 10.9, 12.0, 12.4, 15.9 |
0.375, 0.430, 0.475, 0.490, 0.625 |
Incoloy® |
650°C (1200°F) |
To 7 W/cm²
(45 W/in² |
| 304SS |
| High Temperature WATROD |
9.5 and 10.9 |
0.375 and 0.430 |
Inconel® 600 |
To 980°C (1800°F) |
To 4.7 W/cm²
(30 W/in²) |
| MULTICOIL |
12.0 and 12.4 |
0.475 and 4.90 |
Inconel® |
To 815°C (1600°F) |
To 18.6 W/cm² (120 W/in²), dependent on the sheath material, watt density and heater application |
| Incoloy® |
To 815°C (1600°F) |
| 304SS |
To 650°C (1200°F) |
| 316SS |
To 815°C (1600°F) |
| Steel |
To 400°C (750°F) |
| Copper |
To 175°C (350°F) |
| FIREBAR Flat Tubular |
5/8 in.:
5.9 x 16.5 |
0.235 x 0.650 |
Incoloy® |
760°C (1400°F) |
To 14 W/cm² (90 W/in² |
| 304SS |
650°C (1200°F) |
1 in.:
5.9 x 25.7 |
0.235 x 1.010 |
Incoloy® |
760°C (1400°F) |
| 304SS |
650°C
(1200°F) |
| *These are typical maxiums and vary based on application parameters. |
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Product Information
Click on the below links for more product information. Items that are PDF documents, require Adobe® Acrobat® Reader version 4 or higher for viewing.
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| Related News Releases and Newsletters |
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Chromalox® is a registered tradename of Emerson Electric Co.
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