Inline & Circulation Heaters: High-Efficiency Forced-Flow Thermal Systems










Inline & Circulation Heaters: High-Efficiency Forced-Flow Thermal Systems
| Technical Specs | Range / Typical Values |
| Voltage | 220V / 380V / 440V / 480V |
| Power | 3kW – 500kW+ |
| Pressure Rating | Up to 1500 PSI (Customizable) |
| Materials | SUS304, 316L, Carbon Steel |
Minimal Heat Loss: Each chamber is wrapped in high-grade industrial insulation and housed in a protective steel jacket, ensuring that nearly 100% of the electrical energy is transferred to the process fluid.
Rapid Response: Because the fluid is forced across the elements, heat transfer is significantly faster than in stagnant tank heating, allowing for precise real-time temperature adjustments.
Integrated Flow Management: Often equipped with internal baffles that direct the fluid in a serpentine path, maximizing contact time with the heating elements and eliminating “cold spots.”
Space-Saving Vertical or Horizontal Mounting: Their compact, “plug-and-play” design allows them to be integrated into existing piping systems without the need for large storage tanks.
| Feature | Liquid Circulation (Water/Oil) | Gas/Air Circulation |
| Chamber Material | Carbon Steel or 304/316 SS | High-Temp Stainless Steel or Incoloy® |
| Pressure Ratings | 150lb, 300lb, up to 3000 PSI | Variable based on flow velocity |
| Heating Elements | Copper, Steel, or Incoloy® | Incoloy® or Inconel® (high-temp) |
| Temperature Control | Thermocouple / RTD at Outlet | Dual-sensor (Sheath + Outlet) |
Process Water Heating: Instantaneous hot water for industrial cleaning, laundry, or boiler feed-water preheating.
Oil & Viscosity Control: Heating fuel oils, hydraulic oils, and heat transfer fluids (HTFs) in closed-loop systems.
Steam Superheating: Raising the temperature of saturated steam for power generation or sterilization.
Gas Processing: Heating nitrogen, hydrogen, or compressed air for industrial drying or chemical reactions.
Deionized Water: Specialized stainless steel units for high-purity water in labs and semiconductor plants.
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.