
Marshall W. Nelson
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Pioneers in Combustion Solutions
Established in 1958, Marshall W. Nelson & Associates, Inc. has been a trusted provider of innovative combustion solutions for over six decades. Headquarters in Milwaukee, Wisconsin, with an additional location in Eagan, Minnesota, the company specializes in engineering services and high-quality products tailored for process heating applications across various industries.
In August 2023, Marshall W. Nelson & Associates, Inc. was acquired by Relevant Industrial, LLC, a leader in value-added distribution and service for instrumentation and automation, rotating equipment, valve, purification, and thermal equipment solutions. This strategic acquisition enhances the company’s capabilities and expands its reach in the industrial sector.

Marshall W. Nelson & Associates Product Offerings
Gas Burners
Air Heating Burners
Designed for applications requiring precise temperature control and efficient heat distribution, these burners are ideal for processes such as food processing, paint finishing, and pulp and paper production.
Furnace Burners
Engineered for high-temperature applications, these burners provide reliable performance in industries like metal processing and heat treatment.
Tube Firing Burners
Specialized for uniform heat distribution in tube heating applications, ensuring optimal performance and energy efficiency
Combustion Equipment
Air and Gas Control Valves
Offering precise control of air and gas flow, these valves are essential for maintaining optimal combustion conditions and ensuring safety.
Instrumentation
A comprehensive range of instruments for monitoring and controlling combustion processes, enhancing system efficiency and safety.
Gas Regulators
Ensuring consistent gas pressure delivery, these regulators are vital for the safe and efficient operation of combustion systems.
Meters
Accurate measurement devices for monitoring gas and airflow, crucial for process optimization and energy management.
Heat Exchangers
Designed to transfer heat efficiently between mediums, these are essential components in various industrial processes.
Propane/LPG Equipment
Vaporizers
Equipment designed to convert liquid propane or LPG into gas form, ensuring a steady and reliable fuel supply for combustion applications.
Control Systems
Advanced systems for managing the safe and efficient use of propane and LPG in industrial processes.
Commitment to Safety, Quality, and Integrity
Marshall W. Nelson & Associates, Inc. is dedicated to providing engineered solutions that work. Our sales and service teams support customers throughout the life of their installations, ensuring reliable operation of combustion systems. The company remains engaged with customers from commissioning through ongoing field service and support, emphasizing a partnership approach to meet and exceed client expectations.
Why Choose Marshall W. Nelson & Associates, Inc.?
Over 60 years of expertise in providing combustion solutions across various industries.
A wide array of products tailored to meet the specific needs of industrial combustion applications.
Committed sales and service teams providing ongoing support throughout the lifecycle of installations.
High-quality products and services designed to ensure safety, efficiency, and reliability in all applications.
Visit Our Website
For more detailed information about Marshall W. Nelson & Associates, Inc. and our offerings, please visit the website.