Danfoss Hansen Universal Quick Disconnect - UQD Series

Danfoss Hansen UQD is designed for thermal management applications, available in 4 sizes and has 2 color options. It complies with OCP (Open Compute Project) and exceeds requirements of specified performance characteristics. Danfoss UQD offers color identification (red and blue) and guarantees 100% helium-leak testing.

Danfoss Hansen Universal Quick Disconnect - UQD Series
Inner Rack Solutions One partner, every solution

Product Features

- Designed per OCP (Open Compute Project) UQD specification
- Push-to-connect design
- High flow and no spillage
- Double shut off - flat face valves
- Exceeds OCP flow ratings at least by 25% resulting in reduction in overall energy consumption
- Best in class force to connect
- Standard material: 303, 304 stainless steel provides broad fluid compatibility
- Standard seal material: EPDM
- Color anodized aluminum sleeves
- Color coded (red/blue) sleeves on socket and O-rings on plug
- Wide range of terminal end options: ORB, BSPP on plug and push on hose on socket. Additional configurations available upon request
- Operating temperature -40°C to +150°C
- Typical working pressure: 6.9 Bar, up to 20 bar for smaller sizes

Solutions to your liquid cooling challenges
Inner Rack Solutions


Danfoss’ direct-to-chip cooling solutions extend into the racks through efficient routing of flexible, kink-free hoses, and leak free, helium-tested couplings. Danfoss has a comprehensive portfolio of premium fluid conveyance products to meet your thermal management system needs.

Danfoss Universal Quick Disconnect (UQD) Plug (Male) part

Danfoss Universal Quick Disconnect (UQD) Plug (Male) part Socket (Female) part

UQD02
2UQP43ORMBL*
2UQP43ORMRD*
ML2UQP12MBSBL
ML2UQP12MBSRD

UQD04
4UQP56ORMBL*
4UQP56ORMRD*
ML4UQP37MBSBL
ML4UQP37MBSRD

UQD06
6UQP75ORMBL*
6UQP75ORMRD*
ML6UQP37MBSBL
ML6UQP37MBSRD

UQD08
8UQP87ORMBL
8UQP87ORMRD
8UQP50MBSBL
8UQP50MBSRD

Application market

- Liquid cooling application
- Data center application

Danfoss Power Solutions has launched Danfoss Hansen UQD
May 2023 by Marc Jacob

Danfoss Power Solutions has launched a new family of universal quick disconnect couplings for data center liquid cooling applications. The Danfoss Hansen? UQD couplings help data center operators meet the thermal management challenges of more powerful chips, denser racks, and heavier workloads through reliable, leak-free, efficient operation.

Engineered for the precision cooling requirements of modern data centers, UQD couplings are ideal for in-rack liquid cooling applications that use smaller hose lines. With a 25% higher flow rate than Open Compute Project community standards and a low pressure drop, the couplings’ best-in-class performance improves system efficiency and reduces in-rack power consumption, enabling data center operators to benefit from long-term cost savings. Danfoss UQD couplings also drive a strong return on investment through robust design, long service life, and lower maintenance requirements.

Constructed from stainless steel with an EPDM rubber seal, Danfoss UQD couplings offer high corrosion resistance and broad fluid compatibility. The couplings are designed to operate at a wider range of temperatures and significantly greater working pressures than the Open Compute Project standard. These capabilities help extend the service life of the couplings and ensure no impact on cooling performance during pressure spikes.

With a flat face dry-break design, Danfoss UQD couplings are ideal for use with servers and other highly critical applications that demand 100% uptime and leak-free operation. Even if connections aren’t properly made during assembly or maintenance, the couplings are designed to minimize any risk of leaks that can cause costly damage, downtime, and safety issues. As an additional safety measure, every coupling is helium leak tested.

Danfoss UQD couplings are available in four sizes, as well as various terminal ends and thread configurations. Two color options are available to minimize the risk of misconnection while reducing assembly and maintenance time. In addition, the couplings are engineered to enable quicker and easier maintenance with a push-to-connect design and best-in-class force to connect, both of which allow for convenient, tool-free connection and disconnection with one hand.

- Danfoss Hansen Compact UQD and UQDB NVIDIA GB200 qualified products per RVL11814

- Danfoss Hansen Universal Quick Disconnect (UQD) Compact Design Fact sheet

- Danfoss Hansen Universal Quick Disconnect (UQD) Fact sheet