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Increasing computing power, increasing temperatures
Today, processors (CPUs) such as graphics processing units (GPUs) and RF amplifiers are developing enormous power densities. Heat generation increases with each new generation of hardware - at the same time, systems need to become more compact, more energy-efficient and more reliable. In many cases, air cooling can no longer reliably dissipate the required amount of heat: It reacts more slowly, requires more energy and needs larger heat sinks.
Liquid cooling for processors is therefore becoming the preferred technology for avoiding hotspots, keeping temperatures stable and reliably protecting sensitive electronics.
For this cooling to work, all components of the circuit - especially the connection technology - must be absolutely reliable. This is where the STAUFF QRC-FR series plug-in couplings come into play.
Why liquid cooling is becoming a key technology for processors
Liquid cooling has become a standard in IT, telecommunications and broadcasting systems. It enables:
more efficient heat dissipation
a lower energy requirement
Compact designs for high-density systems
Stable working temperatures
However, the media used there - usually water-glycol mixtures - place special demands on the material, seal and pressure resistance. This requires reliable connection components such as the QRC-FR series.
Requirements for secure connections in cooling circuits
Particularly high requirements apply in cooling circuits for high-performance electronics:
Leakage protection to protect sensitive electronics
Chemical resistance to water-glycol mixtures
Temperature and pressure resistance under dynamic loads
Compact design for limited installation space
Low-maintenance design to reduce downtime
This is particularly essential in data centres or media transmission systems - because any malfunction jeopardises uptime, safety and efficiency.
The STAUFF QRC-FR series at a glance
The QRC-FR series push-to-connect couplings are specially designed for the liquid cooling of high-performance electronic systems.
Technical features at a glance:
Designed for water-glycol mixtures
Stainless steel housing (1.4305, 1.4310)
EPDM gaskets
Nominal size DN 10 (3/8")
Nominal flow rate: 10 l/min
Maximum operating pressure: 3.5 bar - also uncoupled
Temperature range: -30 °C to +100 °C
High corrosion and chemical resistance
Precision-manufactured seals for leak-free operation
Compact, robust design
These properties make QRC-FR an ideal solution for highly sensitive cooling systems.
Practical example: Liquid-cooled CDUs and high-performance electronics
STAUFF QRC-FR couplings are used in high-performance broadcast transmission systems, among other applications.
These take on sustainable broadcasting tasks in today's networked world.
Other typical applications:
Cooling distribution units (CDUs) for high-performance IT infrastructures
Semiconductor and tube-based HF amplifiers
In all of these systems, the liquid cooling for processors must be absolutely stable. Kuggplen of the QRC-FR series ensure that connections remain securely and permanently sealed even under dynamic conditions.
STAUFF advantages outside of classic hydraulics
Even though STAUFF has its roots in hydraulics, products such as couplings from the QRC-FR series show that our components are convincing far beyond this. This is particularly true in areas where:
high reliability,
precise manufacturing,
robust materials and
Absolute security
are required.
Customised solutions for specific cooling requirements
In addition to standard solutions, we also offer customised adaptations of the QRC-FR series:
special materials
Alternative seals
Customised connection geometries
Versions for special media or temperature ranges
Such customisations are often crucial, especially when it comes to liquid cooling for processors - because many cooling circuits are tailored precisely to the respective system.
The future of liquid cooling for processors
Trends such as AI computing, edge infrastructures and high-performance broadcasting systems are continuously increasing the demand for liquid cooling. It is becoming the standard technology in many areas because it:
more powerful,
more stable,
more efficient
than any form of air cooling.
We are continuously developing our products - together with customers, partners and an international engineering network.
FAQs
Why is liquid cooling becoming increasingly important for processors?
Because modern systems generate significantly more heat than air cooling can dissipate.
Which media are suitable for QRC-FR?
Water-glycol mixtures and other coolants (after consultation).
What temperatures do the couplings cover?
From -30 °C to +100 °C.
Can QRC-FR couplings be used in data centres?
Yes, they are also suitable for CDUs and other IT cooling components.
Are customised special solutions available?
Yes - materials, seals and connections can be customised.

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