Economical Continuous Service
Paratherm HE® heat transfer fluid is an economical, highly-refined, mineral-oil based heat transfer fluid formulated for service in closed-loop heat transfer systems to 590°F.
- Continuous service to 590°F
- High flash/fire point
- Extended life in vented systems
- Safe to use, easy disposal
- Municipal Sludge Dryers
- Thermal oil heated laundries
- Asphalt plants and terminals
- Continuous chemical processing
- Bulk in Tankwagons and Flexitanks
- 330-gallon and 1000-liter totes
- 55-gallon (208-liter) drums
- 5-gallon (20-liter) Poly Pails
Lack of color does make a difference
As shown by its almost water-white appearance, Paratherm HE has an extremely low level of impurities. This is the result of the extended processing required to achieve it’s HT1 Rating-approved for incidental food contact by NSF-which removes the impurities that can catalyze fluid degradation. These impurities (such as aromatics, asphaltenes and sulfur bearing compounds) give lesser quality mineral-oil based fluids a slight to moderate yellow color.
Low vapor pressure equals greater stability in vented expansion tanks
Any vapors that are given off by a heat transfer fluid inside a vented expansion tank will react with air to produce the acids that eventually can cause sludge formation and fluid gelling. The higher the vapor pressure, the more vapor is produced and the greater the rate of oxidation. Paratherm HE has a negligible vapor pressure that produces almost no reaction with air in vented expansion tanks.
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Drums should be stored inside to prevent water from getting into the heat transfer fluid. If sealed drums must be left outdoors, they should be stored on their sides. While unopened totes are weatherproof, they should not be stacked if left outdoors. If the fluid is to be stored outside below it’s minimum pumpable temperature, the containers should be moved indoors to warm up before changing the fluid into the system.
Replacing existing fluid
In many cases, changing fluid involves a straightforward drain and fill. There are very few fluids that are so incompatible that 10-15% residue will affect the new Paratherm. If you have any questions, contact us.
Charging new systems
Unless required for product-quality reasons, new systems do not need to be cleaned before Paratherm is charged. The amount of chemical coatings, oils, and other manufacturing residues are usually not enough to affect the fluid life. All that is necessary is to install a Y-strainer with a minimum 60-mesh screen upstream of the pump to catch any metal or welding residue. The screen can be removed once the system has been cycled twice through its operating temperature.
The fluid in new systems should be tested within the 9 to 12 months of start-up. New fluid in existing systems should be tested within the first month of operation to establish a baseline for future testing.