Pipe Heater

WATTCO™ Pipe Heaters are especially constructed to fit inside standard 2 or 3” schedule 40 NPS pipes. Specifically designed to fit in tank applications that require extremely low watt densities such as waxes, thick liquids such as tar, molasses and corrosive mediums. Wattco pipe heaters do not come in contact with the liquid medium. Rather the indirect heating from element to pipe is used to heat liquid sources. This provides easy maintenance as the tank does not need to be emptied out if heater needs to be replaced.


Designed to withstand high heat environments, Wattco pipe heaters are an excellent choice to use with heavy bunker fuel oils, corrosive liquids and liquids with high viscosity. Wattco pipe heaters can use flanged heaters, screw plug heaters as well as resistance coil heaters (open coil heaters).


Pipe heaters use supportive ceramics resistant to high thermal heat that provide mechanical support to coils. Thermocouples can also be used to relay temperature readings to a digital controller that helps regulate the heat intensity. Steel pipes can be used for their thermal transfer properties and their corrosion resistant properties to many petrochemical solutions.  Open coils are the most efficient type of electric heating while at the same time being the most economically feasible for most heating applications.

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  • Flanged

    Pipe heaters with flanges meet with slip on flanges that are welded onto the tank.

  • Screw plug

    Pipe heaters with screw plugs are screwed into a coupling (NPT) and offer simple maintenance free solutions

  • Tubular

    The rigidity of tubular elements offer excellent support in environments with high vibration

  • Coiled

    The most popular of pipe heaters, coiled elements offer the most efficient transfer of heat. Replacement of coils are simple and meet any budget limitations.

Pipe Heater with coil element
Pipe Heater with flange
Pipe Heater with screw plug heater
Pipe Heater with tubular element energized
System Type Application Operating Temperature KW Construction

Open coil elements

Pipe Insert




Large flexible tank

Below ground storage tank



NPT and welded

Large single immersion tank

Viscous fluid





• Tank heating
• Pipe heating
• Metal tubing
• Ovens



• Quick heat up time & easily replaceable
• Outside diameters: 1 7/8’’ and 2 ¾’’
• Lengths: 60-320’’ (5-26 ft)
• Single element ratings: 4-20 kW
• Pipe Surface: 3-12 W/In2
• Voltages: 240, 480 and 600V, 3 PHASE
• Used in horizontal 2’’ or 3’’ schedule 40 NPS pipe
• Equipped with high density electrical ceramic insulating supports
• Can be bent in a vertical plane on at least 12’’ radius
• Heavy gauge bus bars
• Heavy gauge resistance wire
• Special ratings and lengths available upon request

• Very long – 40 ft or greater

• Easy installation

• Very flexible

• Equipped with a continuous support bar that ensures proper rigidity

• Long service life

• Uniform heat distribution 


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