Cartridge, Adapter, Tubing Design (CAT-D) Subsea Hydraulic CAT-D Couplings

Our cutting edge hydraulic couplings support optimized system design while reducing costs and risks associated with welding, inspections, and more.

Why Weld More When You Can Weld Less?

Fully machined to include an adapter and tubing extension, our hydraulic couplings significantly reduce the cost and time associated with welding, inspection, and associated documentation. Metal-to-metal and simultaneous dual sealing poppet technology increase performance while the coupling’s cartridge design eliminates the need for special tooling when replacing poppets and seals.

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The Future of Couplings

Significant Cost Savings

  • Weldless design simplifies assembly and reduces cost
  • Superior performance and lowered cost for multiple applications throughout subsea systems
  • CAT design simplifies supply chain

Simplified Fabrication and Assembly

  • System can be flushed without seal-containing cartridge
  • Coupling available in front and rear loading configurations

Optimized Performance

  • Improved flow coefficient supports optimization of system design
  • Removable cartridge design enables seal replacement without special tooling

CAT-D Couplings Standard Specifications

* Custom options available upon request.

A Robust, Innovative Alternative to Existing Market-Available Solutions

Male Coupling Body
Male Coupling Body
Seal Cartridge
Seal Cartridge
Female Cartridge
Female Cartridge
Poppet
Poppet
Poppet
Poppet
Male Cartridge
Male Cartridge
Female Coupling Body
Female Coupling Body
Retaining Nut (Male)
Retaining Nut (Male)
Retaining Nut (Female)
Retaining Nut (Female)

Contact Us

Contact Us | Subsea Hydraulic CAT-D Couplings

Company page Since our founding in the early 1960s, Oceaneering has expanded and grown globally to service several industries such as the offshore energy industry, defense, entertainment, material handling, aerospace, science, and renewable energy industries. In 1964, Mike Hughes and Johnny Johnson formed a Gulf of Mexico diving company called World Wide Divers. The company grew in response to increasing demand for their services and in 1969 merged with two other diving companies to form Oceaneering International, Inc. To solve the toughest challenges, we do things differently, creatively, and smarter. As your trusted partner, our unmatched experience and truly innovative portfolio of technologies and solutions give us the flexibility to adapt and evolve, regardless of market conditions. Our mission is to solve the unsolvable. We thrive by creating industry-changing technically creative solutions for the most complex operational challenges under water, on land, and in space. Our five core values establish a common culture and demonstrate what is most important for us as a company. Since the beginning, the company has transformed from a small regional diving company into a global provider of engineered products and services. Today, we develop products and services for use throughout the lifecycle of an offshore oilfield, from drilling to decommissioning. We operate the world's premier fleet of work class ROVs. Additionally, we are a leader in offshore oilfield maintenance services, umbilicals, subsea hardware, and tooling. We also serve the aerospace, defense, and theme park industries. Underpinning everything we do, safety is not only the foundation of our core values, but it is vital to our unmatched performance record and company culture. The industries we serve are as diverse as they are complex. Whether we are engineering deepwater umbilicals or developing robotics for aerospace applications, the safety and health of our employees, vendors, and customers is an integral part of our day-to-day business. If we are working, then our responsibility is to be working safely. Since our inception in 1964, we have placed a high value on employee safety—from diving services and subsea inspection to vessel-based installation operations. We have and will continue to evolve not only our health, safety, and environmental (HSE) processes, but those of the industries in which we work. Although we have been fatality-free since 1999, our HSE journey goes beyond statistics. As our portfolio of services has grown, we have continued to prioritize and advance our approach to HSE.