Danfoss data center liquid cooling Products Solutions
Fluid conveyance solutions for liquid cooling of data centers

Redefining Liquid Cooling Solutions

Danfoss leads the way with innovative liquid cooling solutions tailored to exceed the ever-evolving needs of modern data centers. Our systems redefine cooling capacity, resource efficiency, and maintenance ease, setting new benchmarks in temperature management for data-driven environments ensuring your data center stays at the optimal temperature for peak performance and reliability.

Danfoss Liquid Cooling Products

Manifold UQD EPDM Hose Assembly	Liquid Cooling EPDM EHW194 Hose and UQD Series Couplings assembly
Danfoss FD83-2126-32-32 Coupling	Danfoss FD83-2128-32-32 Coupling
FD83-2140-16-16 Coupling	FD83-2128-16-16 Coupling
Danfoss 90° Adapter 12031472 12031470 Danfoss 90° Adapter 12031472 12031470	UQDB06 Couplings
NVBQD02 Couplings	NVQD02 Couplings
NVQD03 Couplings	DANFOSS FD83-2092-16-16 Couplings
DANFOSS UQD04 ; 4UQP56ORMRD 4UQP56ORMBL 4UQS56ORMRDS11 4UQS56ORMBLS11	Danfoss UQD04 and UQDB04 4UQBS75ORM
UQD Series Couplings and hose assembly	FD83 and hose assembly
UQD Couplings EHW194 EPDM HOSE	UQD Couplings EHW194 EPDM HOSE
FD83-2128-16-16 FLANGE	FD83-2128-16-16 FLANGE
Danfoss Hansen Universal Quick Disconnect Blind-Mate UQDB04 4UQBS75ORM	Danfoss UQD04 Couplings 4UQP56ORMRD 4UQP56ORMBL 4UQS56ORMRDS11 4UQS56ORMBLS11
Danfoss Hansen OCP Open Rack V3 Blind Mate Quick Connector BMQC Connector	Danfoss liquid coolings couplings, fittings and hoses
Danfoss UQD02, UQD04, UQD04 Couplings 6UQP37MBSRD 6UQP37MBSBL	FD83 Coupling EHW194 EPDM Liquid cooling hose 无耳无级齿锁卡箍 无泄漏·高密度·高性能
Danfoss NVQD02 Couplings	Danfoss UQD06 Couplings
DANFOSS UQD06 Couplings	Manifold + UQD Couplings

Danfoss Data Center Liquid Cooling
Industry-leading liquid cooling solutions—optimizing energy efficiency and performance across every level of the data center.

Efficient Fluid Conveyance from Source to Chip-Level Cooling

Danfoss Data Center Liquid Cooling Solutions

Revolutionizing Thermal Management with Precision and Performance

In today's high-density computing environments, traditional air cooling is no longer sufficient. With the rise of AI workloads, hyperscale deployments, and cloud services, data centers demand innovative, energy-efficient cooling strategies that can handle increasing thermal loads. Danfoss , a global leader in fluid conveyance and thermal solutions, has engineered a cutting-edge liquid cooling portfolio to meet these demands—offering direct-to-chip cooling systems that deliver unmatched performance, reliability, and sustainability.

Why Liquid Cooling?

Liquid cooling isn't just a trend—it's a transformative technology. Compared to air-based methods, liquid cooling offers:

• 1000x greater cooling capacity
• 25x better heat transfer
• Up to 40% energy savings
• 10x less energy use for heat removal

It enables greater chip density , lowers the carbon footprint, and simplifies maintenance compared to immersion cooling or hybrid air-liquid setups. At the heart of this shift is Danfoss' mission to make liquid cooling efficient, resilient, and scalable.

Source Line Solutions

Danfoss' source line components are designed to transfer coolant from the distribution unit (CDU) to the server rack, while maintaining full-flow, leak-free performance and ease of installation.

FD83 Series – Full-Flow Dual-Interlock Coupling

The industry standard in reliable cooling connectivity, the FD83 is made of stainless steel or engineered plastic and features:

• Dual-interlock safety with a patented locking mechanism
• Identical coupling halves for simplified logistics
• Full-flow design with low spillage
• Sizes: 1" and 2"; Port options: ?", 1", 2"
• 100% helium leak tested

MLDB Series – Flat Face, Dry Break Coupling

Ideal for applications requiring minimal fluid loss and clean disconnection:

• 316 stainless steel construction
• Flat-face, no-spill design with color coding
• Easy connection with integrated pre-guiding system
• Sizes from ?" to 1"
• Leak-free performance in source and rack installations

FC332 – Socketless Hose

• CPE-based construction with textile reinforcement
• Excellent kink resistance
• Operating range: -40°C to +150°C
• Sizes: -04 to -12
• Compatible with socketless fittings for easy tool-free installation

Boston Royal? EHW194 – EPDM Hose

• Flame-resistant (UL94 V-0), smooth, and kink-resistant
• Tight bend radius, multiple color options
• Operating range: -40°C to +140°C
• Pressure rated at 16 bar (232 psi)
• Sizes: -4 to -16 (excluding -5)

Socketless Fittings

These brass or stainless steel fittings are designed for rapid deployment:

• No clamps or tools needed
• Compatible with FC332, GH109, and EHW194 hoses
• Configurable ends for various port requirements

90° Swivel Adapters – FF4514 & FF4521 Series

Designed for angled routing and compact installations:

• 304 stainless steel construction
• Leak-free, corrosion-resistant design
• Full swivel functionality
• 100% helium leak tested
• QR-coded for traceability
• Operating temperature: -3°C to 60°C

Inner Rack Solutions

Within the rack, Danfoss delivers high-flow, leak-free connections that ensure optimal thermal transfer directly to server chips—especially where space and access are limited.

OCP ORV3 BMQC – Blind-Mate Quick Disconnect

• Designed for Open Compute Project (OCP) compliance
• Hands-free, self-centering with misalignment compensation
• Stainless steel body, EPDM seal
• Ideal for tool-less server-to-manifold connections

ADB Series – Flat Face Coupling

• Lightweight aluminum or stainless steel (MLDB)
• Color-coded, dry-break with flat-face design
• No-spill performance from ?" to 1"
• Perfect for inner rack configurations

UQD – Universal Quick Disconnect

• Push-to-connect mechanism for fast, leak-free engagement
• Compact, high-flow design
• Sizes: UQD02 to UQD08
• 100% helium tested for reliability

UQDB – Universal Blind-Mate Quick Disconnect

• Self-aligning coupling with 1 mm radial compensation
• Designed for tight rack access or automated connection systems
• Sizes available: UQDB02 to UQDB06 (UQDB08 in development)

Boston Royal? EHW194 – Repeated Use

As with source lines, this hose provides:

• Flame-rated, tight-radius routing
• Long life and chemical compatibility
• Qualified for both push-on and crimp fittings

Danfoss is not only meeting the rising thermal demands of modern data centers—they're setting the benchmark for what's possible. Their comprehensive liquid cooling portfolio spans every connection point, from CDU to chip, ensuring:

• Maximum performance
• Minimal maintenance
• Global scalability
• Sustainable operation

Whether you're designing new hyperscale facilities or retrofitting for higher efficiency, Danfoss delivers fluid conveyance solutions you can trust —backed by decades of proven expertise.

Danfoss Offering industry-leading solutions with decades of proven performance, Danfoss's global team of fluid conveyance experts are continually advancing liquid cooling technology to enable the data center of tomorrow.

Danfoss Hansen Liquid Cooling Products

UQDB Couplings
FD83-2128-32-32 Coupling
FD83-2128-32-32 Coupling
FD83-2126-32-32 Coupling
D83-2126-32-32 Coupling
FD83-2128-32-32 Coupling
FD83-2128-32-32 Coupling
Danfoss UQDB Connectors 8UQBP87ORM
Danfoss UQDB Connectors 8UQBS106ORM
Danfoss UQDB Connectors 4UQBP56ORM
Danfoss UQDB Connectors 4UQBS75ORM
Danfoss UQD Connectors 12032765
Danfoss UQDB Connectors 6UQBP75ORM
Danfoss UQDB Connectors 6UQBS87ORM
Danfoss UQDB Connectors 6UQBS87ORMS12
Danfoss UQDB Connectors 2UQBP44ORM
Danfoss UQDB Connectors 2UQBS56ORM
Danfoss UQD Connectors 12033026
Danfoss UQD Connectors 12033025
Danfoss UQD Connectors 12029052
Danfoss UQD Connectors 12029051
Danfoss UQD Connectors 12028546
Danfoss UQD Connectors 12028544
Danfoss UQD Connectors 12029054
Danfoss UQD Connectors 12029053
Danfoss UQD Connectors 2UQS25HABLS11
Danfoss UQD Connectors 2UQS25HARDS11
Danfoss UQD Connectors 6UQS50HABLS11
Danfoss UQD Connectors 6UQS50HARDS11
Danfoss UQD Connectors 12029057
Danfoss UQD Connectors 12029056
Danfoss UQD Connectors 11348376
Danfoss UQD Connectors 11348377
Danfoss UQD Connectors 11351282
Danfoss UQD Connectors 11351240
Danfoss UQD Connectors 4UQS25HABLS11
Danfoss UQD Connectors 4UQS25HARDS11
Danfoss UQD Connectors 4UQS25MBSBLS11
Danfoss UQD Connectors 4UQS25MBSRDS11
Danfoss UQD Connectors 4UQS37HABLS11
Danfoss UQD Connectors 4UQS37HARDS11
Danfoss UQD Connectors 4UQS56ORMBLS11
Danfoss UQD Connectors 4UQS56ORMRDS11
Danfoss UQD Connectors 4UQP25MBSRDS14
Danfoss UQD Connectors 4UQP25MBSBLS14
Danfoss UQDB Connectors 8UQBP87ORM
Danfoss UQDB Connectors 8UQBS106ORM
Danfoss UQDB Connectors 4UQBP56ORM
Danfoss UQDB Connectors 4UQBS75ORM
Danfoss UQDB Connectors 4UQBS75ORM-D24
Danfoss UQDB Connectors 6UQBP75ORM
Danfoss UQDB Connectors 6UQBS87ORM
Danfoss UQDB Connectors 6UQBS87ORMS12
Danfoss UQDB Connectors 2UQBP44ORM
Danfoss UQDB Connectors 2UQBS56ORM
Danfoss UQD Connectors 2UQP25MBSBLS11
Danfoss UQD Connectors 2UQP25MBSRDS11
Danfoss UQD Connectors 2UQP43ORMBLS11
Danfoss UQD Connectors 2UQP43ORMRDS11
Danfoss UQD Connectors 4UQP56ORMBLS11
Danfoss UQD Connectors 4UQP56ORMRDS11
Danfoss UQD Connectors 6UQP75ORMBLS11
Danfoss UQD Connectors 6UQP75ORMRDS11
Danfoss UQD Connectors 2UQS25HABLS11
Danfoss UQD Connectors 2UQS25HARDS11
Danfoss UQD Connectors 6UQS50HABLS11
Danfoss UQD Connectors 6UQS50HARDS11
Danfoss UQD Connectors 8UQP87ORMBLS11
Danfoss UQD Connectors 8UQP87ORMRDS11
Danfoss UQD Connectors 6UQS75ORMRDS11
Danfoss UQD Connectors 6UQS75ORMBLS11
Danfoss UQD Connectors 4UQS25FBSRDS11
Danfoss UQD Connectors 4UQS25FBSBLS11
Danfoss UQD Connectors 4UQS25HABLS11
Danfoss UQD Connectors 4UQS25HARDS11
Danfoss UQD Connectors 4UQS25MBSBLS11
Danfoss UQD Connectors 4UQS25MBSRDS11
Danfoss UQD Connectors 4UQS37HABLS11
Danfoss UQD Connectors 4UQS37HARDS11
Danfoss UQD Connectors 4UQS56ORMBLS11
Danfoss UQD Connectors 4UQS56ORMRDS11
Danfoss UQD Connectors 4UQP25MBSRDS14
Danfoss UQD Connectors 4UQP25MBSBLS14
Danfoss UQDB Connectors Male 4UQBP56ORM
Danfoss UQDB Connectors Male 4UQBP56ORM
Danfoss UQD Connectors 2UQS25HARDS11
Danfoss UQD Connectors 2UQS25HARDS11
Danfoss UQD Connectors 4UQS37HARDS11
Danfoss UQD Connectors 4UQS37HARDS11
Danfoss UQD Connectors 4UQP56ORMBL
Danfoss UQD Connectors 4UQP56ORMBL
Danfoss UQD Connectors 4UQS37HABLS11
Danfoss UQD Connectors 4UQS37HABLS11
Danfoss UQD Connectors 4UQS56ORMBLS11
Danfoss UQD Connectors 4UQS56ORMBLS11
Danfoss UQD Connectors 4UQS56ORMRDS11
Danfoss UQD Connectors 4UQS56ORMRDS11
FD83-2126-32-32 Coupling
Danfoss Hansen's FD83
FD83-2140-16-16 Coupling
FD83-2140-16-16 Coupling
Danfoss Hansen's FD83
Danfoss NVQD03 Liquid Cooling Quick Connector
Danfoss NVQD03 Liquid Cooling Quick Connector
Danfoss UQDB Connectors-Socket 4UQBS75ORM
Danfoss UQDB Connectors-Socket 4UQBS75ORM
Danfoss UQD Connectors 4UQP56ORMRD
Danfoss UQD Connectors 4UQP56ORMRD
Danfoss BMQC Quick Connector 5BMP37HB
Danfoss BMQC Quick Connector 5BMP37HB
Danfoss 90° Adapter 12031472 12031470
Danfoss 90° Adapter 12031472 12031470
FD83 Coupling
90° Swivel Adapter
UQD liquid Connector
UQDB Liquid Connector
Danfoss NVQD03 Liquid Cooling Quick Change Connector
Danfoss NVQD03 Liquid Cooling Quick Change Connector
Danfoss BMQC Blind Mate Quick Connector 5BMS75ORM
Danfoss BMQC Blind Mate Quick Connector 5BMS75ORM
Danfoss 12025953 90° Swivel Adapter 12290KSW-20-24FASR
Danfoss 12025953 90° Swivel Adapter 12290KSW-20-24FASR
FD83-2126-32-32 Coupling
Universal Quick Disconnect Blindmate Couplings - UQDB Series
Danfoss Hansen Universal Quick Disconnect Blind-Mate - UQDB Series

Making connections you can count on

From main supply lines to single point connections, Danfoss provides the hardware to make your software work. Our range of fluid conveyance solutions enable you to engineer the safest and most efficient thermal management system for your cutting-edge data center.

Danfoss Hansen FD83 Full-flow dual-interlock coupling

• Designed for high flow rate and no spillage

Boston by Danfoss Royal EHW194 EPDM hose

• Engineered for durability, safety, and ease of use.

Inner Rack Solutions

Rack connections

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 Hansen Universal Quick Disconnect Coupling (UQD)

• Designed for high flow rate and no spillage

Boston by Danfoss Royal EHW194 EPDM hose

• Engineered for durability, safety, and ease of use.

Server blade solutions

To manage the increasing chip densities of today's data center, Danfoss direct-to-chip solutions deliver coolant into the server blade using the perfect combination of flexibility, durability, and ease of connection.

OCP Open Rack V3 Blind Mate Quick Connector (BMQC)

• Self-centering design offers misalignment compensation, ensuring secure connection between the blade and rack.

Couplings

UQD Universal quick disconnect coupling Designed for high flow rate and no spillage, the UQD coupling is perfect for inner-rack applications with smaller hose lines. 303 stainless steel, EPDM seal Push-to-connect design Meets OCP specifications High flow and no spillage 100% helium leak tested

MLDB series Flat face/dry break coupling With sizes for source line and inner rack installations the MLDB series stainless steel coupling is ideal for liquid cooling applications. 316 Stainless steel, EPDM seal Integrated pre-guiding system Color coding available High flow and no spillage Sizes: ” to 1”

ADB series Flat face/dry break couplings Flat face, aluminum coupling is lightweight and strong, featuring profile and alignment features for easy connection. Aluminum, EPDM seal Integrated pre-guiding system Color coding available High flow and no spillage Sizes: ” to 1”

OCP Open Rack V3 Blind Mate Quick Connector (BMQC) Made to allow hands-free connections, the Blind Mate coupling has two parts, one mounts to the rack manifold and another to the server blade itself, delivering coolant directly to the interior of the blade. 303 stainless steel, EPDM seal Self-centering design with radial, angular and axial misalignment compensation Interchange meets OCP standard 100% helium leak tested Size: 5mm

FD83 series dual interlocking coupling An industry standard, our stainless steel FD83 has been supporting data center liquid cooling reliably for decades. Parts cannot be disconnected while liquid is flowing Multiple connection configurations Full flow and minimal pressure drop

Hoses & Tubing

EHW194 Rubber Hose Engineered for durability and ease of use, EHW194 hose features industry-leading safety ratings, superior kink resistance and long-lasting performance. EPDM tube and cover, textile braid reinforcement UL94 V0 rating Multiple color options available Operating temp: -40C to +150C (-40F to 302F) Sizes -04, -06, -08, -10 -12, -16

FC332 Socketless Hose CPE tube and cover, with textile braid reinforcement provides excellent high temperature performance and kink resistance. UL94 HB compliant Excellent kink resistance Operating temp: -40C to +150C (-40F to 302F) Sizes: -04, -06, -08, -10, -12

GH109 EPDM Hose Flexible and lightweight, GH019 hose offers excellent fluid resistance and is extremely flexible for easy installation in tight spaces. UL94 HB compliant Highly flexible Operating temp: -40C to +110C (-40F to 230F) Sizes 9mm, 9.5mm, 11mm

A member of OCP

Danfoss is a Solution Provider of the Open Compute Project (OCP), a collaborative, community-focused organization working to standardize the design and performance of all hardware for small- to hyper-scale data centers. We're not just meeting the industry standard; we're helping set it, both today and into the future.

Documents

Type	Name	Language	Valid for	Updated	Download	File type
Article	Aluminium Flat Face ADB Coupling	English	Multiple	06 Apr, 2023	322.6 KB	.pdf
Article	Danfoss BMQC Expert Article	English	Multiple	07 Feb, 2024	710.8 KB	.pdf
Data sheet	Danfoss BMQC Fact sheet	English	Multiple	15 Aug, 2024	529.1 KB	.pdf
Article	Danfoss Hansen ADB Expert Article	English	Multiple	19 Feb, 2024	576.8 KB	.pdf
Fact sheet	Danfoss Hansen aluminium flat face ADB coupling	English	Multiple	05 Apr, 2023	704.4 KB	.pdf
Article	Danfoss Hansen FD83 Expert Article	English	Multiple	27 Nov, 2023	696.8 KB	.pdf
Fact sheet	Danfoss Hansen FD83 Sell Sheet	English	Multiple	28 Feb, 2024	1.5 MB	.pdf
Data sheet	Danfoss Hansen Universal Quick Disconnect (UQD) Fact Sheet	English	Multiple	13 May, 2024	838.5 KB	.pdf
Fact sheet	Danfoss Hansen UQD Couplings	English	Multiple	16 Jul, 2024	381.8 KB	.pdf
Article	Danfoss UQD Expert Article	English	Multiple	07 Feb, 2024	580.9 KB	.pdf