Product Description Guide-Pipe Insert Heaters/Indirect Immersion Heating:

Pipe Insert immersion heaters (also known as "indirect immersion heating") are ideal for applications where direct contact of the liquid (eg. heavy oil, bitumen/ashphalt etc.) and the heating element are to be avoided; or in large storage tanks/degreasing tanks where draining the tank, in the event a heater needs replacing, is difficult...These heaters require the installation of separate pipes inside a tank. A pipe, welded into the tank, capped at the end inside the tank, and having a flange or screw plug fitting on the open end, is ready to receive a pipe insert heater.

Pipe Insert Heaters Tips: Both flanged and screw plug models can be used to heat a "dry well" in a tank and  are a great choice for applications requiring low watt densities such as for asphalt storage tanks and other substances having a high viscosity. In addition, removal is convenient not requiring the operator to empty the contents of their tank(s)/vessels in order to replace a failed or possibly a higher wattage heater. Pipe insert immersion heaters are designed for installation into a pipe body using standard pipe size. These heaters are available in a wide selection of rates, sizes and sheath materials suitable for the heating requirements of very viscous materials like bunker C fuel oil, temperature sensitive materials like glucose & liquid sugars, and bulk storage of corrosive materials. Pipe insert heaters are very efficient since all energy that is generated is dissipated via conduction and radiation to the inside of the pipe wall then directly through the pipe body and subsequently into the medium which is being heated. All pipe insert heater models incorporate tubular heater construction welded or brazed into a carbon steel pipe flange. Nema 1 terminal enclosures are supplied with all standard units. Moisture resistant ( Nema 4) and explosion proof  (Nema 7) models are also available. A number of sheath materials like Titanium, Incoloy, Stainless Steel, Steel, and Copper can be used as required for specific applications.

American National Standards Institute (ANSI) pipe insert heaters have a standard 150 lb flange but 300 lb and 600 lb flanges are also available. Screw plug pipe insert heaters are available in NPT (National Pipe Thread) and British sizes BSP, BSPP, 1"- 2 ½ " NPTand British  sizes are available. To guarantee sheath material and watt density compatibility with material or process being heated consult NPH. All pipe insert heaters  we offer you including heaters for hazardous locations are CSA/NRTL and UL approved.

Construction-Pipe Insert Heaters: