Drewgard™ corrosion inhibitors
Drewgard corrosion inhibitors effectively control corrosion in open re-circulating and closed cooling water systems. These products, which are manufactured with inorganic or organic chemistries or combinations of both, form passivating complexes at the anodic and cathodic sites on metal surfaces. The resulting surface passivation not only protects system equipment from corrosion but also helps prolong equipment life. Some of the inorganic phosphate-based products are NSF/ANSI certified for use in potable water systems.
Likewise, some of the organic-based products are formulated without nitrite or heavy metals, making them environmentally-friendly options. Recommendation for the appropriate Drewgard product and the corresponding application method depend upon a number of factors, including the cause of corrosion, the type of system and the water chemistry.
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Product Availability
- Asia Pacific
- Europe, Middle East, Africa, India
- Latin America and South America
- North America
Application InformationWant to know more about how our products are used?
Drewgard corrosion inhibitors effectively control corrosion in open re-circulating and closed cooling water systems. Commercial applications confirm this and typically result in a number of value-added benefits.
● Reduced corrosion
● Reduced fouling
● Extended equipment life
● Improved system reliability
● Reduced maintenance costs
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ServicesAshland offers a variety of services which complement this product.
Corrosion Monitoring and Metallurgy
Problems related to corrosion cost commercial and industrial plants billions of dollars each year. Although a variety of means exist to inhibit corrosion, it's important to identify the root cause of the corrosion. Ashland Water Technologies’ Corrosion Monitoring and Metallurgy group provides failure analysis and assessments of steam-generating and heat-exchanger equipment. Working closely with customers, this team provides clear identification of the problem, which leads to a more rapid and effective solution. Key services provided by the group include failure analysis, corrosion coupon analysis, and elemental and compound analysis.
Water Process Applications
Ashland Water Technologies’ Water Process Applications team is dedicated to helping customers improve the performance of their boiler, heating and cooling systems, and associated processes. The team supports customers worldwide from four technical centers that house extensive analytical capabilities and innovative process testing instrumentation. Using both laboratory bench and pilot scale equipment, the team can evaluate chemical and mechanical treatments and explore “what-if” scenarios under actual-use conditions. The hard data and insights gained during these evaluations allow Ashland to confidently recommend treatment strategies that ensure system efficiency.