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Propylene Glycol Antifreeze

Propylene Glycol (PG), also referred to as Mono Propylene Glycol (MPG), has traditionally been selected for cooling and heating systems where a non-toxic classification is required. E.g. in food & beverage processing and where there are other environmental risk considerations - such as domestic solar thermal systems.

Propylene Glycol solutions have poorer heat transfer characteristics than other glycols and are relatively viscous at temperatures below -20°C, often necessitating larger pipe-work, heat exchangers and pumps. To improve system efficiency and reduce operating costs, Hydratech's non-toxic DTX glycol hybrids are worth considering.

Why Hydratech recommend inhibited Propylene Glycol over plain Propylene Glycol for closed-loop cooling and heating systems.

Plain or uninhibited Propylene Glycol provides antifreeze protection only – the lack of inhibitors and additives leaves systems open to corrosion and other issues. The lower initial price for uninhibited Propylene Glycol can be attributed mostly to the fact that the fluid does not contain an inhibitor package, buffers or additives required for a mixed metal system.

Uninhibited Propylene Glycol solutions can be particularly corrosive over time, potentially over 4 times more harmful to a closed-loop system than standard mains water. Inhibitors, buffers and additives neutralise the natural tendency of Propylene Glycol to become acidic and should be used to prevent corrosion, scale and fouling of pipe-work systems and associated components.

To help prevent, unplanned maintenance, high remediation fees and reduced system life, Hydratech’s range of inhibited antifreezes are formulated with high-performance corrosion, scale and biological inhibitors, which exceed ASTM & BS standards.

Coolflow NTP

Non Toxic Antifreeze and Secondary Refrigerant based on Propylene Glycol and ASTM D1384 proven Corrosion, Scale and Biological Inhibitors.

Thermox FPG

Non-toxic heat transfer fluid with antifreeze function, based on propylene glycol and ASTM D1384 proven corrosion, scale and biological inhibitors.

Solaris PG20

Ready-To-Use Non Toxic Extreme Temperature Rated Solar Heat Transfer Fluid with Antifreeze. Based on Propylene Glycol and Reversibly Evaporable Inhibitors to prevent corrosion, scaling and biological fouling.

Solaris PGC

Non Toxic Extreme Temperature Rated Solar Heat Transfer Fluid with Antifreeze Function. Based on Propylene Glycol and Reversibly Evaporable Inhibitors to prevent corrosion, scaling and biological fouling.

Biotherm BP8

Non Toxic Heat Transfer Fluid with Antifreeze Function. Based on Propylene Glycol and ASTM D1384 High Temperature Corrosion Inhibitors for Biomass Heating Systems.

Thermaflow TPF

Non Toxic Heat Transfer Fluid with Antifreeze for use in Hot Water Heating Systems. Based on Propylene Glycol and ASTM D1384 High Temperature Rated Corrosion, Scale & Biological Inhibitors.

DTX Products

DTX glycol hybrids have been especially formulated to exploit the advantages Ethylene Glycol has over Propylene Glycol, whilst delivering a non-toxic solution.

More about DTX Products

Checked your fluid condition?

Regular analysis can extend the life of both fluid and system. Hydratech’s Fluid Monitoring Program (FMP) is a very straight forward, effective way to proactively monitor closed-loop system condition.