Defrost & Vacuum Heaters: Precision Thermal Solutions for Extreme Environments
Defrost & Vacuum Heaters: Precision Thermal Solutions for Extreme Environments
| Technical Specs | Range / Typical Values |
| Vacuum Level | Up to 10−7 Torr |
| Voltage | 110V / 220V |
| Lead Wire | PTFE or Fiberglass (High-temp) |
Hermetic Moisture Sealing (Defrost): Featuring vulcanized neoprene or silicone resin seals, our defrost heaters are 100% waterproof. This prevents “wicking” and internal shorts in high-humidity or melting ice conditions.
Low Outgassing Materials (Vacuum): Constructed using specialized stainless steel, Inconel, or ceramic insulators, our vacuum heaters are cleaned for high-vacuum compatibility to ensure no volatile particles contaminate your process chamber.
Superior Formability: Both types can be custom-bent into complex serpentine or circular patterns to wrap around evaporator coils (defrost) or fit within tight vacuum flange assemblies.
Corrosion Resistance: Built with high-grade alloys to withstand the aggressive “freeze-thaw” cycles and the corrosive cleaning agents often used in food storage and laboratory settings.
| Feature | Defrost Heaters | Vacuum/UHV Heaters |
| Sheath Material | Stainless Steel, Aluminum, Incoloy | 316L SS, Tantalum, Ceramic |
| Sealing Type | Silicone Molded / Shrink Tube | Glass-to-Metal / Ceramic Seal |
| Temp Range | -40°C to +150°C | Up to 1000°C (In Vacuum) |
| Environment | Saturated Moisture / Ice | High-Vacuum (10−7 Torr+) |
Commercial Refrigeration: Automatic defrost cycles for reach-in freezers, display cases, and walk-in cold rooms.
Semiconductor & Thin Film: Substrate heating and chamber bake-outs during deposition or etching processes.
Space Simulation: Testing satellite components in vacuum chambers to mimic orbital thermal conditions.
Food Processing: Preventing ice buildup on conveyor belts and spiral freezers in flash-freezing plants.
Analytical Instrumentation: Heating components in Mass Spectrometers and Electron Microscopes.
For critical industrial processes, a heating element is only as good as its durability and control. At Runkel, we specialize in high-spec thermal engineering. From high-vacuum environments to hazardous explosion-proof zones, we provide fully customized heaters integrated with bespoke Control Cabinets for a true “plug-and-play” experience.
The Total Solution: Integrated Control Cabinets. We don’t just provide the heat; we provide the brain. To ensure your heating system operates safely and accurately, we offer Custom-Built Control Cabinets tailored to your specific heater:Precise Control: PID or PLC-based systems for temperature accuracy within $\pm 1$°C.Safety First: Integrated over-temperature protection, leakage circuit breakers, and emergency stops.User Interface: Digital displays, HMI touchscreens, or remote monitoring capabilities.Custom Voltage: Built to match your local industrial power standards (e.g., 220V, 380V, 440V, or 480V).
“Complex Requirements, Simple Execution.”
Direct Replacement of Legacy Parts:
If your imported equipment has a failed flanged heater or a specialized vacuum element that is too expensive or slow to source from the OEM, we can reverse-engineer and manufacture a replacement that meets or exceeds the original specs.
Material Excellence:
We select materials based on your environment—whether it’s Incoloy 800 for high-temperature oxidation or Pure PTFE for chemical longevity.
Start Your Custom Build Today
Whether you need a replacement Defrost Heater for a cold storage unit or a complete Explosion-Proof Circulation System with a control panel, we are ready to assist.