Open coil elements are the most efficient type of electric heating element and the most economically feasible for most heating applications. Used predominantly in the duct heating industry, open coil heater elements have open circuits that heat air directly from the suspended resistive coils. These industrial heating elements have fast heat up times that improve efficiency and have been designed for low maintenance and easily, inexpensive replacement parts.
Open coil heating elements from Wattco are typically made for duct process heating, forced air & ovens and for pipe heating applications. Open coil heater elements are made to fit inside standard 2’’ or 3’’ schedule 40 NPS pipe. Open coil heaters are used in tank, pipe heating, and/or metal tubing. A minimum clearance of 1/8’’ is required between the ceramic and the inside wall of the tube. An open coil element will provide excellent and uniform heat distribution over a large surface area.
Open coil heater elements are an indirect industrial heating solution to decrease 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.
Get a quote for an open coil element today. WATTCO also manufactures other industrial heating products such as infrared heaters, control panels, circulation heaters and more. Click here to view all of our products.
 Open Coil (style 3)
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 Open Coil angle 2
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 Open Coil angle 3
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 Open Coil angle 4
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 Open Coil element (style 2)
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 Open Coil Element with bracket
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 Open Coil Heating - Skewed
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 Open Coil Heating Rack
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High Quality grades of NiCr resistance wire (80-20) & (65-35) Resistive wire gauges from 6 Gauge wire up to 38 Gauge available Coil diameters from .250 inch dia up to 0.875 inch dia Arrow Ceramic/steatite clips (insulators) or rounded ceramic clips available Termination options include screw type or other alternatives Custom stretch ratios available
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