Watlow offers a full line of hot runner nozzle heaters for the plastics industry as well as slip-on heaters for the medical and analytical industries. While every heater has a unique set of capabilities, each nozzle heater is designed to meet specific application requirements. Whether an application requires high performance, high temperature or high watt density Watlow has the heater to fit the application.
The MI nozzle heater from Watlow® is a high-performance heater. The nozzle heater’s performance and name are derived from Watlow’s exclusive mineral insulation—a material with a much higher thermal conductivity than mica and hard ceramic insulators used in conventional heaters.
A thin layer of the “high” thermal conductive MI material is used to electrically insulate the element wire from the inside diameter of the heater sheath. A thicker, “low” thermal conductivity layer backs up the element wire, directing the heat inward toward the heated part. The result is more efficient heat transfer—a performance solution lowering element wire temperatures and increasing heater life.
Material | Maximum Operating Temperatures | Maximum Watt Densities | ||
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°F | °C | W/in2 | W/cm2 | |
Stainless steel | 1400 | 760 | 230 | 35.6 |
Features | Benefits |
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Operating temperatures to 1400°F (760°C) |
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Higher watt densities |
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High thermal conductivity of MI and low mass construction |
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Stainless steel cover and side fold design |
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Permanently attached clamp bars |
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