5 decades of growth.

In 1965, Hans Unger, John Radhal, Frank Hansen founded the business that would become Continental Disc Corporation, LLC.

In the decades since, the original team of 12 has grown to more than 300 employees in our 96,000 square foot worldwide corporate headquarters – and in dozens of other offices across the globe.

In 50 years, we’ve:

  • Expanded our core company
  • Acquired a product line
  • Acquired a business division
  • Acquired two corporations

Our catalog of products has grown from two rupture discs to more than 30 discs and related support products, plus hose valves, tank vents, flame arrestors, pilot-operated valves and gas blanket regulator lines.

We believe that kind of growth doesn’t come from business acumen alone.

It comes from a hard-earned reputation for manufacturing high-caliber custom products and flawless customer support.


How we ensure flawless customer support

From the salespeople to the engineers, every CDC employee knows the Continental Disc Corporation Quality Policy – it’s a cornerstone of our company culture.

In short, we strive to provide customer satisfaction with every product and service we provide.

How? Through a commitment to three objectives:
• To meet or exceed customer specifications legal requirements,
• To deliver products and services when promised without fail, and
• To continually improve the effectiveness of our quality management system.

The credentials behind our custom products

Unger, Radhal and Hansen launched CDC with rupture discs designed to support four processing industries. Fifty years of striving, engineering and inventing ever more advanced products have helped us expand into more than 40 industries.

That 50-year commitment to custom quality is reflected in the certificates and licenses our quality system, manufacturing processes and products have earned.


Our first lot of rupture discs was produced at a small facility in Kansas City, Missouri. We’ve grown considerably since then, but we haven’t outgrown our pride in our local community.

Rebuilding Together Clay County

Rebuilding Together repairs homes, revitalizes communities and improves the lives of low-income families, seniors, veterans and people living with disabilities.

Hope House

Hope House provides shelter, refuge, support and freedom to every man, woman and child affected by domestic violence.

Harvesters Community Food Network

Harvesters provides food, household products, and nutrition education programs to more than 620 not-for-profit agencies in Missouri and Kansas.

Kansas City Rescue Mission

Kansas City Rescue Mission helps the poor, homeless, hungry and hurting, offering Christ-centered empowerment and holistic support.

Hillcrest Transitional Housing

Hillcrest Transitional Housing offers homeless families, singles and youth a disciplined educational program within a caring, supportive environment.

City Union Mission

City Union Mission provides mental, spiritual and physical support and guidance – from youth summer camps to food assistance – to men, women, and children who are poor or homeless.

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