Heated HosesHeated Hose – Standard Liquid & Gas Hoses Isopad IHH-ST4A/ST4D (to 400°C)
The Thermocoax Isopad IHH-ST4A/ST4D is a flexible heated hose for liquid and gaseous media with a maximum operating temperature of 400°C.

Designed for use across a wide range of industrial sectors, Eltherm heated hose assemblies deliver performance, flexibility, and compliance with international safety standards, including ATEX and IECEx.
Designed for use across a wide range of industrial sectors, Eltherm heated hose assemblies deliver performance, flexibility, and compliance with international safety standards, including ATEX and IECEx.
Eltherm-controlled analytic heated hoses are suitable for transporting gas from the point of withdrawal to an analytic measuring device when the temperature is up to 450ºC. Usually found fixed and mounted in plants or part of a portable system, the controlled analytic hose is typically found in applications such as power stations or waste incineration plants.
The main functionality is emission monitoring; however, in recent years there has been an increase in process analytics by industries such as chemical and petrochemical looking to monitor and control combustion processes.
For further specification details please see the data sheet and the blog below.
| Category | Heated Hoses |
|---|
| Component | Description |
|---|---|
| 1. Inner Liners | Material and specifications vary—refer to the detailed selection table below. |
| 2. Sensor | Integrated temperature sensor for precise thermal regulation and monitoring. |
| 3. Heating Cable | Electrically trace-heated cable with spacer for uniform heat distribution. |
| 4. Insulation | High-performance thermal insulation minimises heat loss and improves efficiency. |
| 5. Outer Jacket | Durable protective jacket designed for mechanical and environmental protection. |
| 6. End Caps | Securely sealed end fittings to ensure containment and operational safety. |
| Part Number | Temperature | Description |
| Eltherm ELH/a | 200 °C | fixed PTFE or PFA core |
| Eltherm ELH/ai | 200 °C | fixed PTFE core replaceable PTFE or PFA core |
| Eltherm ELH/ad | 250 °C | fixed PTFE core with VA braiding and RSL pipe stubs |
| Eltherm ELH/adi | 250 °C | fixed PTFE core with VA braiding and RSL pipe stubs replaceable PTFE or PFA core |
| Eltherm ELH/adi-SP | 250 °C | fixed PTFE core with VA braiding and RSL pipe stubs replaceable PTFE or PFA core |
| Eltherm/ae | 600 °C | fixed stainless steel pipe |
| Outer Jacket | Temperature Range | Description |
| Corrugated PA hose (PA-11/12) | -40 to 80 °C | Standard |
| Corrugated TPRI-B hose | -30 to 150 °C | Highly flexible at high ambient temperatures |
| Corrugated PA hose (PA-12) | -50 to 100 °C | For robotic applications |
| Corrugated metal hose stainless steel | -50 to 300 °C | Tread-resistant, robust design, highly corrosion-resistant (Mat. ANSI-304) Only for indoor use IP 40 |
| Corrugated metal hose, galvanised stee | -50 to 300 °C | Tread-resistant, robust design Only for indoor use IP 40 |
| Corrugated hose with PVC outer jacket / ANACONDA | -25 to 70 °C | Tread-resistant, robust design Can also be used outdoors |
| Silicone outer jacket, red | -30 to 220 °C | Flexible design, e.g. for heated mini hoses With requirement for limited space |
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Heated HosesThe Thermocoax Isopad IHH-ST4A/ST4D is a flexible heated hose for liquid and gaseous media with a maximum operating temperature of 400°C.
Heated HosesThe Thermocoax Isopad IHH-ST2A/ST2D is a flexible heated hose for liquid and gaseous media with a maximum operating temperature of 200°C.
Heated HosesThe Thermocoax Isopad IHH-ST1A/ST1D is a flexible heated hose for liquid and gaseous media with a maximum operating temperature of 100°C.
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