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WATTCO™ open coil elements are especially made to fit inside standard 2 or 3" schedule 40 NPS pipes. They are used in tank and pipe heating, and metal tubing. A minimum clearance of 1/8" is required between the ceramic and the inside wall of the tube. Installing an open coil element assembly in a schedule 40 NPS pipe will provide excellent and uniform heat distribution over large surface areas.

WATTCO™ open coil elements are an indirect heating solution to decrease the watt density requirements or the heat fluxes on the surface area of the pipe connected to the heated section and prevent heat sensitive materials from coking or breaking down.
Unit of Measure

Specifications

Brands

 N/A WATTCO™

Outside Diameter

 N/A 1 7/8 in2 3/4 in

Length

 N/A 60 to 320 in5 to 26 ft

Single Element Ratings

 N/A 4 to 20 kW

Pipe Surface

 N/A 3 to 12 W/in

Voltage

 N/A 240 V480 V600 V

Phase

 N/A 3

Key Features

Key Features

 N/A
  • 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

Application

Application

 N/A
  • Tank heating
  • Pipe heating
  • Metal tubing

Benefits

Benefits

 N/A
  • Very long size: 40 ft. or more
  • Solidly built
  • Easy installation
  • Very flexible
  • Equipped with a continuous support bar that ensures proper rigidity
  • Long service life
  • Uniform heat distribution

Caution

Caution

 N/A
  • Do not mount open coil elements vertically. The resistance wire will sag and this will result in uneven heating and short circuits.
  • For vertical installation, check with factory.
  • Leave 3/8" ft. of heater length for expansion.
  • Install temperature controls, fusing, and backup safety devices.

Additional Information

Additional Information

 N/A Open coil elements are the most efficient type of electric heating while at the same time, being the most economically feasible for most heating applications. Used predominantly in the duct heating industry, open coil elements have open circuits that heat air directly from the suspended resistive coils. Fast heat up times also improve efficiency while being designed for low maintenance and easily, inexpensive replacement parts.