Heat Transfer Fluid
Duratherm G
- "Duratherm is working great." — K. Rose
- "We have increased the time between oil changes and nearly eliminated any issues." — J. Smith
- "Duratherm provides excellent heat transfer characteristics." — Ryan Seward
- "I've even recommended Duratherm to the equipment manufacturer." — Ed Slack
- "Duratherm saves money in the long run." — J. Smith
- "Yet another bonus was that the pricing was below comparable fluids." — S. Bailey Sr.
Polyalkylene glycol based fluids such as UCON 500® are a widely used form of heat transfer fluid that until now offered only average performance, short fluid life and have not been compatible with most other types of heat transfer fluids.
Duratherm G’s exclusive additve system now allows for its successful use in high demand applications like those found in the plastic industry, die casting and even performs and lasts exceptionally well in open baths.
Finally ... a glycol thermal fluid that’s compatible with the more common petroleum fluids!
Compatibility
Duratherm G thermal fluid not only outperforms most other fluids it also contains a unique and proprietary additive that makes it compatible with the more commonly used petroleum based fluids. This allows for a worry free transition across different fluid chemistries and eliminates any need for special procedures.
We’ve also reduced odors and improved fluid clarity when compared to other glycol thermal fluids.
Longevity
In the thermal fluid industry cost is always a concern, however fluid longevity and resistance to harmful fouling are of equal importance.
Air contact is normally detrimental to a fluid. Oxidation can cripple your system and if left unchecked will ultimately cause catastrophic failure. Unscheduled downtime due to oil failure has a high cost and negative effect on production.
Duratherm G thermal fluid contains our proprietary blend of anti-oxidants, corrosion inhibitors, metal deactivators, seal and gasket extenders etc. to ensure a long trouble free service life in even the most demanding, extreme oxidation applications.
Tools
| Duratherm G Properties | ||
|---|---|---|
| Appearance: clear liquid, very slight yellow tint | ||
| Maximum bulk/use Temp. | 500°F | 260°C |
| Flash Point ASTM D92 | 511°F | 267°C |
| Fire Point ASTM D92 | 543°F | 284°C |
| Autoignition ASTM E-659-78 | 704°F | 373°C |
| Viscosity ASTM D445 | ||
| cSt at 104°F / 40°C | 48.3 | |
| cSt at 250°F / 121°C | 6.0 | |
| cSt at 500°F / 260°C | 1.5 | |
| Pour Point ASTM D97 | -40°F | -40°C |
| Density ASTM D1298 | lb/ft3 | g/ml |
| at 100°F / 38°C | 57.1 | 0.914 |
| at 250°F / 121°C | 54.5 | 0.873 |
| at 500°F / 260°C | 49.2 | 0.788 |
| Thermal Expansion Coefficient | 0.0377 %/°F | 0.0801 %/°C |
| Thermal Conductivity | BTU/hr F ft | W/m K |
| at 100°F / 38°C | 0.095 | 0.164 |
| at 250°F / 121°C | 0.088 | 0.152 |
| at 500°F / 260°C | 0.076 | 0.131 |
| Heat Capacity | BTU/lb F | kJ/kg K |
| at 100°F / 38°C | 0.470 | 1.967 |
| at 250°F / 121°C | 0.510 | 2.135 |
| at 500°F / 260°C | 0.560 | 2.345 |
| Vapor Pressure ASTM D2879 | psi | kPa |
| at 100°F / 38°C | 0.04 | 0.27 |
| at 250°F / 121°C | 0.16 | 1.10 |
| at 500°F / 260°C | 0.55 | 3.79 |
| Distillation Range ASTM D2887 | 10% | 694°F (367°C) |
| 90% | 957°F (513°C) | |
*The values quoted in the table above are typical of normal production. They do not constitute a specification.
Technical Papers
Heat Transfer Fluid Basics
- Understanding Fluid Degradation
- Understanding Flash, Fire and Auto Ignition Points
- Avoiding Oxidation and Thermal Degradation
Selecting a Fluid
- Thermal Fluid Selection Guide for Systems Under 250 Gallons
- Thermal Fluid Selection Guide for Systems Over 250 Gallons
- Open Baths and Heat Transfer Fluids