Glycol
DOWCAL® – Corrosion-Inhibited Heat Transfer Fluids
Guldager supplies Dowcal® products, which are based on ethylene or propylene glycol. The products contain a specially developed corrosion inhibitor system that ensures optimal system performance over time.
With Dowcal® technologies, your system is protected for the long term, ensuring reliable ongoing performance while safeguarding structural materials against degradation.
The various glycols are utilized across a wide range of applications, including solar thermal systems, HVAC systems, chemical, pharmaceutical, and food production, as well as industrial cooling systems.
FLUIDFILETM is designed to assist in calculating the properties and performance of Dowcal products under your specific system conditions and in your preferred units.
Whether you are an experienced professional or a first-time system designer, the software assists you in selecting the appropriate product. FLUIDFILE™ provides an overview of Dowcal products, guidance on fluid chemistry selection including technical application data, and individual product profiles.
Click here to use the FLUIDFILETM software.
Contact Guldager for technical support regarding glycol selection. We can advise on the optimal choice for your application, including performing water/glycol analyses of existing systems for troubleshooting or identifying the type of glycol currently present in the system.
Dowcal® Benefits
- Specially formulated compositions with corrosion inhibitors ensure low corrosion rates in systems containing iron, steel, copper, aluminum, etc.
- Dowcal® fluids do not attack most types of plastics and metals, minimizing the risk of system failures and leaks.
- The products ensure long-term efficiency. The specialized corrosion inhibitor composition enables operation at higher temperatures than alternative technologies.
- Dowcal® is environmentally and occupationally friendly: The products contain no nitrite or borax, and are free from substances classified as mutagenic, carcinogenic, or toxic for reproduction.
- Dowcal® operates across a wide temperature range. DowcalTM 100E & 200E can be used from -50 °C to 175 °C, while Dowcal® N is recommended from -50 °C to 120 °C.
- Dowcal® can be diluted down to a 20% mixture. Guldager supplies pre-blended glycols in 20/80, 25/75, 30/70, 35/65, 40/60, and 50/50 ratios. The products can be supplied as clear liquids or with blue or red dye added upon request.
Dowcal® Products
The products are available in canisters, drums, IBC tanks, and bulk.
Dowcal® 100E
Dowcal® 100E is an ethylene glycol-based (MEG) heat transfer fluid. The product contains a robust corrosion inhibitor system. Used, for example, in pharmaceutical and specialty chemical production for heating and cooling reactors. Also ideal for heating, ventilation, or air conditioning systems.
Dowcal® 200E
Dowcal® 200E is a propylene glycol-based (MPG) heat transfer fluid. The product contains a robust corrosion inhibitor system. The fluid has low acute oral toxicity and is frequently used in HVAC systems, the food and beverage industry, and other applications where toxicity upon ingestion is a concern.
Dowcal® N
Dowcal® N is a propylene glycol-based (MPG) fluid that is NSF/FDA approved. The product has low acute oral toxicity, and it contains a corrosion inhibitor system with the same approval, allowing Dowcal® N to be used in applications with direct or indirect food contact.
The effects of Dowcal® products, including their corrosion-inhibiting properties, are thoroughly researched and well-documented.
Application
Do you have any questions? We are ready to provide advice and guidance
Use our chat function here on the page or contact us at +45 48 13 44 00 if you have any questions or would like a visit from our consultants.
Our service center is also in contact with our service vehicles if you need system servicing or emergency assistance.
