Purity FG Heat Transfer Fluid

PURITY FG Heat Transfer Fluid provides great thermal and oxidative stability, which can promote longer fluid life. PURITY FG Heat Transfer Fluid is also:

  • Suitable for non-pressurized, liquid phase, closed heat transfer systems up to 326°C/619°F, which require a food-grade heat transfer fluid
  • Formulated to provide higher thermal and oxidative stability, which can contribute to extended fluid life and lower operating costs by reducing the frequency of
    fluid change-outs
  • Suitable for food processing and food-related operations such as the manufacturing of food product
    packaging material
  • Food-Grade Heat Transfer Fluid registered NSF HT1 and acceptable for use in food processing facilities in Canada

Product Description

Petro-Canada PURITY FG Heat Transfer Fluid is formulated to lower operating costs by reducing the frequency of fluid change-outs in operations that require a food grade product. PURITY FG Heat Transfer Fluid’s unique chemistry starts with a blend of 99.9% pure base fluids, produced from a patented HT purity process. These crystal-clear fluids are free of impurities that can hinder performance. Utilizing more than 25 years of formulating experience, Petro-Canada fortifies these thermally stable fluids with specially selected additives to provide outstanding protection from oxidative breakdown. The result is PURITY FG Heat Transfer Fluid, a food grade fluid that provides high thermal efficiency in systems operating up to 326°C (620°F). PURITY FG’s breakthrough chemistry can extend fluid life longer than leading competitive fluids, lowering operating costs by reducing the frequency of fluid change-outs.


Petro-Canada PURITY FG Heat Transfer Fluid is recommended for use in liquid phase heat transfer systems used in food processing or pharmaceutical operations with continuous bulk operating temperatures up to 326°C (620°F). Typical applications include central cooking facilities, drying, edible oil deodorizing and the heating of deep frying oils. PURITY FG may also be used in heating baths where an odourless, non-hazardous fluid is required for worker health and safety. PURITY FG Heat Transfer Fluid’s outstanding resistance to oxidative breakdown is also beneficial in food related manufacturing operations where exposure to air can not be avoided, and oxidation is the most likely form of fluid degradation. Common applications include the manufacture of plastic bottles, films and containers for the packaging of food products.

Features and Benefits

1. Higher thermal and oxidative stability than leading competitors can extend fluid life and lower operating costs

• More thermally stable than leading competitive fluids, even full synthetics Thermal stressing of a heat transfer fluid can cause the formation of light molecular compounds. These compounds can:

– raise a fluid’s vapour pressure, which can cause fluid leakage from control valves and pipe flanges, circulating pump cavitation and vapour locking
– dramatically reduce a fluid’s autoignition temperature, the lowest temperature that a fluid will combust, without flame or spark, in the presence of oxygen
– lower the operating temperature at which the heat transfer system can safely operate
– necessitate a costly, premature fluid change-out

• More resistant to oxidative breakdown than leading competitive fluids
A fluid’s resistance to oxidative breakdown is critical in heat transfer systems where exposure to air can not be avoided. Strong oxidative resistance can significantly extend fluid life, providing operational savings by reducing fluid change-out frequency and down time.

2. Higher resistance to oxidative thickening versus leading competitive fluids
As a fluid oxidizes, it becomes more viscous. This increase in viscosity can:

– significantly reduce a fluid’s thermal efficiency
– make the fluid more difficult to circulate through the heat transfer system
– result in overheating of the fluid
– necessitate a costly, premature fluid change-out

3. Less prone to solids and resins formation versus leading competitive fluids

• PURITY FG Heat Transfer Fluid’s resistance to oxidative fluid breakdown also minimizes the formation of deposits transfer systems. These
deposits can dramatically reduce a system’s heat transfer efficiency, increasing operating costs.

4. Low vapour pressure can save on top-up costs while improving workplace safety
• PURITY FG’s low vapour pressure can reduce or eliminate fluid leakage from control valves and pipe flanges
• Reduction or elimination of leaks provides a cleaner and safer operating environment, and results in operational savings by reducing the need for cleaning, maintenance and fluid top-up

5. Natural lubricity extends operational savings
• PURITY FG’s natural lubricating properties can also reduce maintenance costs by extending the service life of circulating pumps and other rotating parts

6. Fully approved for use in and around food processing areas
• PURITY FG also meets the highest industry purity standards and fits perfectly in HACCP (Hazard Analysis Critical Control Point) and GMP (Good Manufacturing Practice) plans:

– HT-1 registered by NSF
– Meets the requirements of the U.S. Department of Agriculture (USDA) as an H1 fluid for use in federally inspected meat and poultry plants where incidental food contact may occur
– All fluid components comply with FDA 21 CFR 178.3570 “Lubricants with incidental food contact”
– Approved for use in registered food processing plants by the Canadian Food Inspection Agency (CFIA)
– Certified Kosher and Pareve by Star K

Operational Considerations

PURITY FG Heat Transfer Fluid’s high thermal stability provides long service life under normal operating conditions up to its maximum recommended temperature. However, actual fluid life is dependent upon system design and operating practice. Special precautions should be taken to avoid operating conditions that can shorten fluid life. These include:

• thermal shocking resulting from accelerated system temperature increases
• thermal shocking from hot spots on a system’s heating coils
• continuously running above the maximum recommended operating temperature

Although PURITY FG Heat Transfer Fluid is highly resistant to oxidative breakdown, excessive air and water contamination can reduce thermal efficiency and shorten fluid life. Where practical, Petro-Canada recommends inert gas blanketing of a system’s expansion tank to guard against exposure to air and water and the need to change-out the fluid prematurely. While PURITY FG has been formulated for high resistance to contamination from air and water, contamination with process chemicals or deteriorated residual fluids can shorten fluid life. To maximize system efficiency and fluid life, Petro-Canada highly recommends system flushing prior to recharging with PURITY FG Heat Transfer Fluid.

Thermal Data

ScreenHunter_03 Apr. 26 00.43Typical Performance Data

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