Our Services
Industrial Equipment Sales & Services — Midwest
Duff & Associates LLC has built a reputation as one of the most trusted industrial equipment suppliers in the Midwest. We offer a comprehensive range of products and services to meet the demanding needs of power generation, processing, and manufacturing facilities.
Dampers
We supply and service a full range of industrial dampers including control dampers, isolation dampers, diverter dampers, and louver dampers for power generation, industrial processing, and HVAC applications.
Expansion Joints
Our expansion joint solutions include metallic, fabric, and rubber expansion joints designed to absorb thermal movement, vibration, and misalignment in piping and duct systems across a variety of industrial environments.
Industrial Equipment Sales
We represent leading manufacturers of industrial equipment and components, providing quality products to facilities throughout the Midwest. Our team helps you identify the right solution for your application.
Field Services & Repair
Beyond sales, Duff & Associates provides on-site inspection, maintenance, and repair services for dampers, expansion joints, and related equipment. We help extend the life of your existing assets.
Custom Fabrication
When standard products don't meet your requirements, we work with our manufacturing partners to deliver custom-fabricated solutions built to your exact specifications and industry standards.
Engineering Consultation
Our experienced team provides engineering consultation to help you select the right products, troubleshoot existing systems, and plan for maintenance or replacement of critical industrial components.
Need a custom solution?
Contact us to discuss your specific requirements or request a quote for your project.