Our customers produce the world’s energy, chemicals, and plastics, and
eliminate harmful emissions from the air, water, and soil. We help them
operate in a cleaner, safer and more economical way.

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In 1989, the John Zink brand was acquired by the Koch family of companies. Since its creation, the John Zink brand has embodied the highest quality in combustion and emissions control systems.
Based in Krefeld, Germany, the experts at KEU have been developing innovative air heaters and thermal oxidation systems used in the petrochemical, pharmaceutical and food preparation industries for almost a century. KEU joined the Koch family of companies in 2005.
KALDAIR’s innovative, high pressure flare technologies were purchased by John Zink in 2001.
Known for its vapor recovery technology expertise, the McGill brand was purchased by the Koch family of companies in 1992.
Chentronics joined the Koch family of companies in 2011. An ignition innovator since 1985, Chentronics has been producing patented technologies through extensive research and development with thousands of High Energy Ignition System installations worldwide.
This international burner and flare company joined the Koch family of companies in 2011.
Hamworthy Combustion joined the Koch family of companies in 2011. Founded in the UK in 1962, it’s been a leading provider of boiler burner and marine application solutions throughout Europe, the Middle East and Asia for decades.
This respected brand of boiler burners for the power and industrial markets was acquired through a limited asset purchase in 1999.
The Peabody Engineering brand, which traces its roots to 1920, has a strong stable of boiler burner products and was acquired in 2011.
Coen Company, Inc. has been around for decades and is synonymous with market leading boiler burner technology for the power and industrial markets. The Coen brand was acquired by the Koch family of companies in 2007.
John Zink Hamworthy Combustion is affiliated with Koch Industries, one of the largest privately held companies in the U.S.


We’re part of the Koch Industries family of companies. Koch is one of the largest privately held companies in the U.S. As a result, we’re able to develop industry-leading innovations and make strategic acquisitions to offer proven emissions control and clean-air solutions.

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Our workplace is guided by the principles of the Market-Based Management® system (MBM), an empowering business philosophy that places a high level of value and responsibility on each team member, and ensures customer-focused quality in everything we do.

Guiding Principles.

Integrity: Have the courage to always act with integrity.

Stewardship & Compliance: Act with proper regard for the rights of others. Put safety first. Drive environmental excellence and comply with all laws and regulations. Stop, think and ask.

Principled Entrepreneurship™: Practice a philosophy of mutual benefit. Create superior value for the company by doing so for our customers and society. Help make Koch the preferred partner of customers, employees, suppliers, communities and other important constituencies.

Transformation: Transform yourself and the company. Seek, develop and utilize the visions, strategies, methods and products that will enable us to create the greatest value.

Knowledge: Acquire the best knowledge from any and all sources that will enable you to improve your performance. Share your knowledge proactively. Provide and solicit challenge consistently and respectfully.

Humility: Be humble, intellectually honest and deal with reality constructively. Develop an accurate sense of self-worth based on your strengths, limitations and contributions. Hold yourself and others accountable to these standards.

Respect: Treat everyone with honesty, dignity, respect and sensitivity. Embrace different perspectives, experiences, aptitudes, knowledge and skills in order to leverage the power of diversity.

Self-Actualization: Be a lifelong learner and realize your potential, which is essential for fulfillment. As you become increasingly self-actualized you will better deal with reality, face the unknown, creatively solve problems and help others succeed.


Giving Back.

We’re passionate about how we treat our co-workers, our customers … and our community. Through financial support, fundraising, hundreds of hours of volunteer time, and event participation, we’re honored to help make a difference for a variety of worthy causes.

Helping Communities Thrive.

Giving back to our communities is an important part of the culture here at John Zink Hamworthy Combustion.


We strive for continuous improvement in the environment, health and safety (EH&S) performance of our operations. We maintain numerous industry certifications, underscoring our commitment to providing a culture of safety and compliance for all our employees.

EH&S Certifications and Authorizations.

  • ISO 45001: This certification of our Tulsa and Luxembourg facilities is evidence of our focus on identifying and eliminating workplace hazards while maintaining health and safety compliance.
  • VPP Star Certification: The Voluntary Protection Program recognizes our Tulsa facility as a location that shows a commitment to improved safety and health performance beyond the requirements of the OSHA standards, and has demonstrated safety performance considered best in class.
  • ISO 14001: Both our Luxembourg and Tulsa facilities meet the requirements for the internationally recognized ISO 14001 Environmental Management System.



We have a fundamental belief in continuous improvement through innovation. This focus drives us to implement world-class management systems that are recognized for meeting or exceeding industry standards in quality (ISO 9001).

World-Class Quality.

Quality Certifications and Authorizations:

  • ACCP Certified Welding Inspector Program
  • American Petroleum Institute—API-936 Refractory Inspection Personnel
  • ANSI/ISO 9001:2015 Quality System
  • ASME “S” Steam Boilers Authorization
  • ASME Section V Nondestructive Testing Program
  • ASME Section IX Welding Program
  • ASME “U” Unfired Pressure Vessels Authorization
  • AWS Certified Welding Inspector QC-1Program
  • NACE International—Coating Inspector Certifications
  • NBBI “R” Repair and Alteration Authorization
  • NBBI “NB” Registration Authorization