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Industrial Maintenance: Choosing the Right Thermal Fluid for Your Closed-Loop Application
The integrity of any industrial manufacturing or process facility hinges on its thermal management system. Within these closed-loop applications—from chemical reactors and molding machines to utility cooling and HVAC—the fluid that carries the heat is the lifeblood of...
The Importance of Sewer Maintenance: How Grease Release Simplifies FOG Management
For city and municipal public works departments, the daily challenge of maintaining critical infrastructure is constant. Among the most persistent and costly issues is the management of Fats, Oils, and Grease (FOG). Unmanaged FOG leads to the hidden risks of poor...
Maintaining Heating and Cooling Systems in Commercial Buildings: The Role of Glycol-Based Thermal Fluids
The continuous, reliable operation of heating, ventilation, and air conditioning (HVAC) systems is essential for occupant comfort, data center stability, and overall energy management in commercial buildings. Glycol-Based Thermal Fluids for HVAC systems are a key,...
The Science of Stability: Closed-Loop Thermal Systems in Pharma & Biotech
In the pharmaceutical and biotechnology industries, the integrity of every product from the initial chemical synthesis to the final packaged vial is fundamentally dependent on temperature control. For molecules and biologics that are highly sensitive to thermal...
How Glycol-Based Thermal Fluids Are Cooling the Next Generation of Data Centers
The demand for computational power is accelerating at an unprecedented rate, driven by AI, machine learning, and global cloud infrastructure. This growth necessitates massive expansion; for instance, industry leaders like Google continue to announce plans for new,...
Why Glycol-Based Thermal Fluids Outperform Other Thermal Fluids in Critical Applications
Efficient thermal management is the quiet foundation of reliability, safety, and energy efficiency in modern commercial and industrial facilities. For engineers and technical decision-makers responsible for mechanical systems, the choice of a heat transfer fluid is a...
Thermal Fluid Use in Power Grid Support
Efficient heat transfer is fundamental to the reliable operation of any power generation facility. The continuous, demanding environment of power plants, from coal and natural gas to solar thermal, requires systems that operate at peak efficiency with minimal...
Boosting Productivity in Food Processing with Safe, Reliable Glycol-Based HTF
In the food industry, the success of an operation hinges on two non-negotiable factors: temperature control and food safety. From baking bread to pasteurizing beverages, maintaining precise, consistent temperatures is critical for product quality and yield. At the...
Mission
Our mission is to deliver quality, time-tested products and services with expertise, responsiveness and integrity, while growing our relationships with customers and vendors.
Over a Century of Service
Throughout that continuous operating history, Douglas has diversified into multiple niche markets. A solid commitment to integrity and to all the people we work with was passed down through the generations from the very start, and continues to this day.
Our production, warehouse and sales staff has over 200 years of direct expertise in problem solving and product solutions for the industries we serve.







