Corval Recertifies with National Board and ASME

Corval Group is pleased to announce Corval Constructors, Inc. (CCI) of St. Paul, Minnesota, renewed its certification with the American Society of Mechanical Engineers (ASME) to construct Power Boilers and High-Pressure Piping (S certification mark) and Pressure Vessels (U certification mark) through January 2026. Simultaneously, the National Board of Boilers and Pressure Vessel Inspectors renewed the R-Stamp indicating Corval Constructors, Inc. is certified to repair boilers and pressure vessels.  

President Todd Dougan noted, “CCI and its predecessors have carried ASME Certifications and National Board R-Stamp for over 30 years. It was a significant team effort to achieve these certificates, and we are proud to carry these certifications for the next three years.”

The ASME Certification Mark, regarded as the hallmark of acceptance and certification, indicates that the stamped items conform to the ASME Boiler and Pressure Vessel Code (BPVC). The National Board offers the Certificate of Authorization and R symbol stamp for the repair and/or alteration of boilers, piping, pressure vessels, and other pressure-retaining items. Before issuance of a National Board R Certificate of Authorization, the organization, and its facilities are subject to a review of its Quality System.

About Corval Group

Founded in 1921, Corval Group is your single-source solution partner. We deliver pre-construction services, project development, engineering, fabrication, refrigeration, construction, service, and maintenance expertise to the power and energy, food and beverage, public and institutional, industrial, manufacturing, and commercial sectors. And just as it was in 1921, we seek new ways to grow capabilities, expand offerings and build confidence.

About the American Society of Mechanical Engineers

Founded in 1880, the American Society of Mechanical Engineers (ASME) is a professional association that promotes multidisciplinary engineering and allied sciences around the globe via continuing education, training, and professional development, codes and standards, research, conferences, and publications, government relations, and other forms of outreach. ASME’s standards are developed by committees of subject matter experts using an open, consensus-based process. Government agencies cite many ASME standards as tools to meet their regulatory objectives. For more information, visit

About the National Board of Boiler and Pressure Vessel Inspectors

Created in 1919, The National Board of Boiler and Pressure Vessel Inspectors is an organization that develops standards, training programs, and certifications to promote greater safety of life and property through uniformity in the construction, installation, repair, maintenance, and inspection of pressure equipment. For more information, visit

We Build Confidence

For more information, contact:

Share News:

Related News

Contact Corval Group for Facilities That Work

Have a unique need, special situation, or just not sure where to begin?