Feature: Connectors
Quick Disconnect Blind-Mate). These compact, high-efficiency quick disconnects are engineered to meet the reliability, installation speed and space efficiency requirements of next- generation data centre cooling systems. Designed in accordance with Open Compute Project (OCP) specifications, both connector families provide the assurance of cross-compatibility with other standardised components in the OCP ecosystem. The UQD Series (Figure 1) is a tool-less, push-pull
connection system that uses a robust steel ball-lock mechanism. Its compact design allows for installation in tight server environments, while the quick-connect functionality reduces downtime during maintenance cycles. These connectors also feature bidirectional dry-break shut-off valves, preventing fluid loss during disconnection. A latch-style socket, which is also available, offers a flat-
button design that minimises the risk of accidental actuation – an important differentiator for sensitive or crowded installations. The connectors in this series are constructed with corrosion-resistant stainless-steel housings and aerospace-grade sealing materials, the UQD connectors are built for reliability and durability under harsh operating conditions. Available in four standard OCP sizes – UQD02, UQD04,
UQD06, and UQD08 – the connectors support a wide range of applications. Their flow performance is tailored to the needs of modern cooling systems, with valve flow coefficient (Cv
)
values ranging from 0.4 to 3.7, and fluid loss during disconnect operations held to minimal levels, as low as 0.004ml for the smallest models. These specifications ensure that coolant is transferred efficiently whilst keeping system maintenance clean and controlled. Where the UQD Series excels in quick-connect operation, the
UQDB Series (Figure 2) introduces the additional benefit of blind-mate functionality. This feature is particularly valuable in modular server configurations and chassis systems, where connectors must align and engage automatically, without visual guidance. The UQDB incorporates a 1mm radial compensation feature that enables self-alignment, ensuring a sealed and secure connection even in blind-mate installations. The result is a sealed, high-integrity connection every time,
Figure 2: The Amphenol UQDB connector’s 1mm radial compensation enables self-alignment, ensuring a sealed and secure connection even in blind-mate installations
even in tight, inaccessible environments. Like its counterpart, the UQDB Series is manufactured with
stainless steel shells, corrosion-resistant spring components and sealing materials compatible with common coolants, including deionized water, ethylene glycol and propylene glycol. It also offers different end termination options and can be configured in multiple mechanical layouts for application flexibility. The UQDB’s performance characteristics mirror those of the UQD, with operating pressures from 0-0.6MPa, safe pressure ratings up to 2MPa, and temperature support ranging from -40°C to 105°C.
Supporting standardisation Amphenol developed these two product lines to align with the Open Compute Project’s (OCP’s) drive toward standardisation and modularity in the advancing data centre architectures. By adhering to OCP specifications, Amphenol ensures its connectors are interoperable with other liquid cooling components from different vendors. This interoperability not only streamlines system integration but also simplifies maintenance, upgrades and replacements in mixed-vendor environments. As OCP adoption grows in hyperscale computing environments, so too does the value of compliant components like the UQD and UQDB. While primary market of the UQD and UQDB series lies
in high-performance computing, both are also suited to other high-reliability environments where compact, leak-free fluid connections are critical. These include energy storage systems, electric vehicle charging infrastructure, advanced telecommunications equipment and defence electronics. In all of these applications, the need for efficient, space-saving and serviceable thermal management systems is on the rise. The development of these two series is a strategic expansion
for Amphenol Industrial Operations into the liquid cooling space. Complementing these core product lines, Amphenol also offers the BMQC quick disconnect and fully custom manifold solutions, giving customers complete flexibility to design and introduce optimised cooling architectures that meet unique system requirements.
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