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 -20C, often necessitating larger pipe-work, heat exchangers and pumps. To improve system efficiency and reduce operating costs, a DTX or Potassium Formate based heat transfer fluid is worth consideration.

Why Hydratech recommend inhibited glycol for closed-loop cooling and heating systems.

Plain or uninhibited 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 glycols 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 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 glycols 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 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.