Screw plug immersion heater
Heatrex Inc.
integrity.
• One piece forging of hex, thread and riser assures reliability.
• Element spacers prevent hot spots.
• Bussing is permanent and encapsulated in epoxy seal.
• UL CSA label furnished on all standard copper, stainless steel and
Incoloy sheathed heaters, NEMA Type 1, 4 and 4x environments.
Tubular Elements are welded or silver soldered into a hex head
pipe thread fitting. Elements have 80/20 nickel-chromium resistance
coils centered in a heavy gauge metal tube surrounded by
magnesium oxide insulation. Through rolling, the magnesium oxide
is compacted for rapid heat transfer from the coil to the sheath.
Elements are annealed, bent and then 360° repressed to insure
magnesium oxide integrity in the bent area.
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