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Screw plug immersion heaters are ideal for direct immersion heating of liquids, including all types of oils and heat transfer solutions.

Available in a variety of sizes, Watlow® screw plug immersion heaters feature both WATROD™ round and FIREBAR® flat tubular elements.

Heating elements are hairpin bent and either welded or brazed into the screw plug - depending on element sheath and plug material compatibility.

General purpose terminal enclosures are standard; with optional moisture resistant, explosion resistant and explosion/moisture resistant enclosures available to meet specific application needs.

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Item #

List Price

Plug Size

Plug Voltage

Plug Wattage

Watt Density (W/in.²)

B Dimension (Immersed element length)

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$1,399.00 N/A 2 Inch Plug - 3 Elements N/A 480 V N/A 9,000 W N/A 47.8 N/A 25.2500 in Add To Cart
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$1,314.00 N/A 2 Inch Plug - 3 Elements N/A 240 V N/A 15,000 W N/A 59.8 N/A 32.1250 in. Add To Cart
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$1,443.00 N/A 2 1/2 Inch Plug - 3 Elements N/A 480 V N/A 9,000 W N/A 58.6 N/A 20.6250 in. Add To Cart
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$1,561.00 N/A 2 1/2 Inch Plug - 3 Elements N/A 240 V N/A 12,500 W N/A 43.3 N/A 34.0000 in. Add To Cart
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$2,227.00 N/A 2 1/2 Inch Plug - 3 Elements N/A 480 V N/A 12,500 W N/A 23.2 N/A 63.7500 in. Add To Cart
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$2,485.00 N/A 2 1/2 Inch Plug - 3 Elements N/A 480 V N/A 9,600 W N/A 22.4 N/A 33.6250 in. Add To Cart
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