Gas Cylinder Heater | Eltherm ELFL

Gas Cylinder Heaters
Precision Heating for Safe, Efficient Gas Bottle Use in Industrial & Hazardous Areas
The ELFL Gas Cylinder Heaters by Eltherm are engineered to deliver precise temperature control and pressure stabilisation for gas cylinders, ensuring optimal performance in various industrial applications. These heaters are particularly vital when working with high-value or moisture-sensitive gases, as they prevent condensation and ice formation, allowing complete utilisation of the gas contents.
With options suitable for hazardous areas (ATEX/Ex), the ELFL series provides a safe and energy-efficient solution that ensures complete gas withdrawal and avoids freezing at cylinder outlets. Whether in laboratories, chemical plants, or utility environments, ELFL heaters help maintain process reliability and safety.
With over 40 years of industry experience, Thorne & Derrick’s team of hazardous area heating and trace heating specialists deliver tailored solutions backed by expert support. We offer complete system design, including heat loss calculations, intelligent control systems, and product specification—ensuring full compliance with safety standards and seamless integration with your operational requirements.

Gas Cylinder Heater | Eltherm ELFL Benefits
- Accurate Temperature & Pressure Control – Ideal for maintaining optimum working temperatures and preventing ice formation.
- Fast, Easy Installation – Hinged design with quick-release fasteners and ergonomic handles
- Energy Efficient – 50 mm mineral wool insulation minimizes heat loss for sustainable use
- Hazardous Area Compatible – Versions available for Ex zones on request
- Tailored Solutions – Custom dimensions and specifications available
ELFL Gas Bottle Heater Applications
Eltherm ELFL heaters are suitable for a wide range of gases, including:
- Propane
- Nitrogen
- Sulphur hexafluoride (SF₆)
- Oxygen
- Tungsten hexafluoride (WF₆)
- Hafnium (Hf)
- Boron trichloride (BCl₃)
Eltherm ELFL
Technical Information
| Material | Metal sheet |
| Heating Element | Fluoropolymer insulated |
| Insulation | 50 mm mineral wool |
| Fastening | Quick-release fasteners |
| Power Cable | 1.5 m long with CEE plug |
| Control | Capillary tube thermostat and safety limiter (alternatives available on request) |
| Thermal Safety | Class 2 |
| Ambient Temperature Range | -20 °C to +60 °C |
| IP Rating | IP52 |
| Weight | Approx. 19 kg |
| Finish | Gentian-blue (RAL 5010), heating surface: black |
Technical Specifications
| Part Ref | Bottle Size | Diameter (mm) | Height (mm) | Power (W) | Voltage (V) | Temperature Control |
|---|---|---|---|---|---|---|
| ELFL-10 | 10 L | 146 | 750 | 350 | 230 | 0–50 °C (control), 20–150 °C (limit) |
| ELFL-20 | 20 L | 210 | 750 | 430 | 230 | 0–50 °C (control), 20–150 °C (limit) |
| ELFL-40 | 40 L | 210 | 1345 | 840 | 230 | 0–50 °C (control), 20–150 °C (limit) |
| ELFL-50 | 50 L | 235 | 1350 | 1000 | 230 | 0–50 °C (control), 20–150 °C (limit) |
Thorne & Derrick are proud to be a trusted distributor of Eltherm trace heating solutions, including gas bottle heaters. With extensive industry experience and technical support, we help ensure safe and energy-efficient gas supply in critical applications across industrial sectors.
Contact Thorne & Derrick for expert advice, specifications, and product availability.

