Pressure Rated Flanged Immersion Heaters
Flanged Immersion Heaters are designed for use in tanks and pressurized vessels to heat both liquids and gases. They mate to a companion flange that is either welded to a tank wall or, for circulating type heaters, to a pipe.
Watt Densities for Typical Applications
8 watts/in2 (1.3 watts/cm2)
- Typical Applications: Fuel Oils (Bunker C and Number 6)
- Recommended Flange: 150-lb Raised Face Forged Carbon Steel
- Elements: Steel Sheath
15 watts/in2 (2.3 watts/cm2)
- Typical Applications: Fuel Oils (Number 4&5)
- Recommended Flange: 150-lb Raised Face Forged Carbon Steel
- Elements: Steel
16 watts/in2 (2.5 watts/cm2)
- Typical Applications: Heat Transfer Oils ● Liquid Paraffin
- Recommended Flange: 150-lb Raised Face Forged Carbon Steel
- Elements: Incoloy® 800 sheath
23 watts/in2 (3.6 watts/cm2) (A)
- Typical Applications: Lightweight Oils ● Heat Transfer Oils ● Degreasing Solutions
- Recommended Flange: 150-lb Raised Face Forged Carbon Steel
- Elements: Steel
23 watts/in2 (3.6 watts/cm2) (B)
- Typical Applications: Forced Air ● Caustic Solutions ● Degreasing Solutions
- Recommended Flange: 150-lb Raised Face Forged Carbon Steel
- Elements: Incoloy® 800 Sheath
48 watts/in2 (7.4 watts/cm2)
- Typical Applications: Process Water
- Recommended Flange: 150-lb Raised Face Forged Carbon Steel
- Elements: Incoloy® 800 Sheath
60 watts/in2 (9.3 watts/cm2) (A)
- Typical Applications: Deionized Water
- Recommended Flange: 150-lb Raised Face 316 Stainless Steel
- Elements: 316 Stainless Steel Sheath
60 watts/in2 (9.3 watts/cm2) (B)
- Typical Applications: Clean Water
- Recommended Flange: 150-lb Raised Face Forged Carbon Steel
- Elements: Copper Sheath
60 watts/in2 (9.3 watts/cm2) ©
- Typical Applications: Deionized Water
- Recommended Flange: 150-lb Raised Face 316 Stainless Steel
- Elements: 316 Stainless Steel Sheath
Sheath Materials
- Incoloy 840 - Nickel 18-20%, Chromium 18-22%, Iron balance.Has about 10% less nickel than Incoloy 800. Used in many air heating applications, where it has exhibited superior oxidation resistance at less cost than Incoloy 800.
- Incoloy 800 - Nickel 30-35%, Chromium 19-23%, Iron balance. 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.
- 316/316L Stainless Steel - Chromium 16-18%, Nickel 11-14%, Iron balance. (316L - Low Carbon) Modified with the addition of Molybdenum (2-3%) to improve corrosion resistance in certain environments, especially those which would tend to cause pitting due to the presence of chlorides. Applications include deionized water. Maximum Sheath Temperature: 1200°F / 649°C
- 304/304L Stainless Steel - Chromium 18-20%, Nickel 8-11%, Iron balance. (304L - Low Carbon) Used in the food industry, medical, and chemical heating. Maximum Sheath Temperature: 1200°F (649°C)
- 321 Stainless Steel - Chromium 17-20%, Nickel 9-13%, Iron balance.Modified with the addition of Titanium to prevent carbide precipitation and resulting intergranular corrosion that can take place in certain mediums when operating in the 800-1200°F (427-649°C) temperature range.
- Copper - Standard Copper Alloy. A low temperature, inexpensive material used mainly for clean water heating. Maximum Sheath Temperature: 350°F / 177°C
- Steel - Low Carbon. Used for high to low viscosity oils, asphalt, tar, wax, molten salt, heat transfer liquid media and other compatible solutions.
- Incoloy 825 - Nickel 38-46%, Chromium 19.5-23.5%, Molybdenum 2.5-3.5%, Iron balance
Mounting Options
Round Mounting Flange
Standard ASTM Pressure-Rated Flange Sizes: 3, 4, 5, 6, 8, 10, 12, 14
Square/Rectangular Mounting Flange
Custom Manufactured to meet application needs.
Flange Materials
- Incoloy 800 Flange 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 (also see Incoloy® 840) and immersion heating of potable water and other liquids that are not corrosive to an Incoloy® 800 sheath.
- 304 SS Flange - A Chromium (18-20%), Nickel (8-11%), Iron Alloy used in the food industry, sterilizing solutions, air heating and many organic and inorganic chemicals.
- 304L SS Flange - A Chromium (18-20%), Nickel (8-11%), Low Carbon Iron Alloy used in the food industry, sterilizing solutions, air heating and many organic and inorganic chemicals.
- 316L SS Flange - A Chromium (16-18%), Nickel (11-14%), Low Carbon 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.
- Steel Flange - Low Carbon Steel: 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.