Propylene Glycol Uninhibited-Heat Transfer Fluid 100% Concentrate TRUEGARD

Uninhibited means the fluid contains no added corrosion inhibitors, so it does not provide built-in metal protection for system components. This makes it best suited for closed-loop or controlled systems where material compatibility is already established, or where a separate inhibitor package is used.

You mix the concentrate with water at a ratio appropriate for your target temperature range; the product data states that water solutions provide freeze protection to below -60°F and burst protection to -100°F. Using a higher proportion of concentrate relative to water pushes protection toward those lower limits, while lighter dilutions suit milder temperature requirements.

Propylene glycol carries a much lower toxicity profile than ethylene glycol, which is why TRUEGARD lists food industry process heating and cooling as a suitable application for this fluid. Ethylene glycol-based fluids are generally not recommended where any risk of incidental food contact exists.

Yes - the fluid is rated from -60°F up to 250°F, making it suitable for both low-temperature freeze protection and elevated-temperature process heating applications such as closed-loop and water-based haul systems.

The fluorescent pink dye is added specifically for leak detection, allowing you to quickly identify and locate any leaks in a system by the visible color of the escaping fluid.

The product is listed as suitable for closed-loop and process heating and cooling applications within its -60°F to 250°F operating range, which covers the typical demands of hydronic heating and similar closed-loop systems. Because it is uninhibited, verify that your system materials are compatible before use.