In data centers, leak-free operation is not a detail. It is essential.
When a single drop of coolant can threaten the profitability of an entire data center, reliability is not optional. For over 95 years, VOSS has been setting the standard for safe and leak-free fluid systems.
VOSS develops and manufactures line and connection systems for liquid cooling applications, built on decades of fluid management expertise, automotive-proven sealing technology, and globally scalable industrialization.
180 Million
Leak-Free Fluid Connections per Year
5,000 Cycles
per UQD for Long Service Intervals
30%
Lower Pressure Drop than Conventional UQDs
<0.1 Seconds
Self-Sealing for Virtually Drip-Free Disconnection
95 Years
of Fluid Management Expertise Since 1931
When Cooling Performance Grows, Operational Risk Shouldn't Grow with It
With the rapid growth of AI and HPC infrastructures, power densities, heat loads, and integration requirements per rack are increasing significantly. As a result, liquid cooling is becoming a key enabler of modern data center performance, while also introducing new operational challenges.
For operators, cooling capacity alone is not enough. What matters is how safely a system can be integrated, maintained, and scaled. Even a single leak can put critical hardware at risk, trigger service interventions, and directly impact uptime.
This is why data center operators need partners who do not view connection technology as an isolated component, but as part of a robust and reliable system architecture. That is exactly where VOSS comes in.
Expertise You Can Rely On
Since 1931, VOSS has been delivering high-performance fluid management solutions for demanding industrial applications.
Building on decades of experience in engineering, prototyping, and series production, we support our customers throughout the entire product lifecycle, from the initial concept to global scale-up.
Our expertise ranges from leak-free sealing technology and flow-optimized geometries to modular, ready-to-deploy system solutions for modern data center liquid cooling architectures.
The Strategic Advantage for Your Data Center Program
Our expertise transforms cooling component selection into a strategic advantage for your data center program.
Fluid Connection Solutions for Data Center Liquid Cooling
Standardized connectors and tailored solutions for modern liquid cooling systems.
Standardized Connection Systems
The VOSS Universal Quick Disconnects (UQDs) and Multi Quick Disconnects (MQDs) have been specifically developed for direct-to-chip and rack-level solutions in modern data center liquid cooling systems. Their patented flush-face valve technology enables virtually drip-free disconnection while providing extremely fast self-sealing performance. This significantly reduces the risk of coolant leakage in sensitive data center environments.
In addition, the CFD-optimized internal geometry ensures exceptionally low pressure drop, supporting energy-efficient system design. This is a key factor in maximizing performance, improving energy efficiency, and optimizing Power Usage Effectiveness (PUE).
- Patented Flush-Face Valve Technology
- Self-Sealing in <0.1 Seconds
- Ultra-Low Flow Resistance Through Flow-Optimized Design
- Stainless Steel Housing for High Corrosion Resistance
- Safety Locking Mechanism with Audible and Tactile Feedback
One-Hand Operation for Fast, Tool-Free Connection
Technical Performance Characteristics of the UQD Series
The VOSS UQD family is specifically designed for the operating demands of modern data center liquid cooling systems, delivering the safety, efficiency, and durability required for mission-critical applications.
MQD03 Multi
3 mm
Nominal Diameter (DN)
≥ 25 bar
Maximum Allowable Operating Pressure
2 L/min
Flow Rate
-40 °C to +100 °C
Operating Temperature
Up to 5,000 Connection Cycles
Service Life
UQD04 Compact
4 mm
Nominal Diameter (DN)
≥ 25 bar
Maximum Allowable Operating Pressure
7 L/min
Flow Rate
-40 °C to +100 °C
Operating Temperature
Up to 5,000 Connection Cycles
Service Life
UQD06 Balanced
6 mm
Nominal Diameter (DN)
≥ 25 bar
Maximum Allowable Operating Pressure
11 L/min
Flow Rate
-40 °C to +100 °C
Operating Temperature
Up to 5,000 Connection Cycles
Service Life
UQD08 High Flow
8 mm
Nominal Diameter (DN)
≥ 25 bar
Maximum Allowable Operating Pressure
18 L/min
Flow Rate
-40 °C to +100 °C
Operating Temperature
Up to 5,000 Connection Cycles
Service Life
Tailored Solutions
In addition to standardized connection solutions, VOSS develops tailored solutions for data center liquid cooling applications. We support our customers with holistically engineered subsystems for the liquid cooling loop, ranging from customized connectors and application-specific manifold solutions to tailored line systems and pre-assembled assemblies. Based on this approach, we create sealing and connection solutions that are precisely matched to your architectural, media, and installation space requirements.
Different Requirements. One Partner Who Understands Them.
Whether you are a hyperscaler, OEM, colocation operator, or system integrator, each stakeholder approaches liquid cooling from a different perspective. VOSS supports you with solutions tailored to your technical, operational, and scalability requirements.
Hyperscaler & AI Operator
Consistency and Supply Reliability at Scale
When rolling out high-performance infrastructure at scale, consistent quality, global supply reliability, and standardized components become critical success factors. VOSS supports you with OCP-aligned solutions, global manufacturing capabilities, and proven process stability for large-scale deployments.
Server- & Rack-OEMs
Development Partner for Series Production
When bringing liquid cooling architectures to series production, you need more than a component supplier. VOSS supports you throughout CAD integration, qualification, and industrialization, backed by proven sealing, connection, and system expertise for advanced rack-level cooling solutions.
Colocation and Data Center Operators
Retrofittable, Easily Integrated, Highly Reliable
Whether you are expanding existing infrastructure or deploying new environments, connectivity, serviceability, and operational reliability are essential. VOSS provides solutions that integrate seamlessly into existing cooling systems while creating a scalable foundation for future growth.
System Integrators & EPCs
Fast from Design to Implementation
When projects require rapid specification, coordination, and implementation, dependable engineering support and fast response times make all the difference. VOSS accompanies you from concept development and prototyping through sample validation to series production and project execution.
Shaping the Future of Data Center Cooling Together
As a member of the Open Compute Project (OCP), VOSS actively contributes its expertise to the development of open, scalable solutions for data center liquid cooling.
This means that we not only align with relevant specifications and architectures, but also contribute to solutions that support interoperability, scalability, and operational reliability in demanding data center environments.