Danfoss新的MQD液冷快换接头，适合数据中心GB300机架应用程序
高腐蚀性和广泛的流体兼容性满足现代数据中心的冷却要求
2025年2月28日

Danfoss丹佛斯新型体积更小的MQD液冷快换接头专为英伟达GB300，Nvidia的第二代Blackwell B300 系列处理器开发。，英伟达计划在2025年年中推出BlackwellUltra GB300AI服务器，采用全水冷散热方案，并带来更强悍的性能。与现有的BlackwellGPU直接焊接到主板不同，BlackwellUltra将采用插槽式设计，用户可以像CPU一样自由安装或卸载GPU，这一改变简化了制造流程，对生产互连组件和插槽的制造商尤为有利。新一代 GB300 AI 服务器将采用“Blackwell Ultra”架构，由于性能显著提升，导致功耗也大幅增加，将取消风扇风冷版本将采用全液冷散热方案，全面采用液冷系统并以「液对液」方式为主，并且GB300CPU 及GPU 将改用插槽(Socket)设计，对液冷快接头需求将成倍递增，此前1台GB200 服务器机柜需要用到300 颗液冷快接头，预计GB300 机柜需要600 颗液冷快接头，液冷快接头市场将迎来成倍增长。

丹佛斯汉森（Danfoss Hansen）MQD 与 MQDB 系列产品
Danfoss Hansen MQD and MQDB
Fact sheet > Danfoss Hansen. MQD and MQDB

产品概述

产品特点

• 材质：304 不锈钢主体 + EPDM（三元乙丙橡胶）密封件
• 颜色标识：MQD 手动对接型采用红 / 蓝双色标识，便于区分
• 规格选择：提供三种尺寸（MQD02、MQD03、MQD04）
• 密封检测：所有部件均经过 100% 氦气泄漏测试
• 工作温度范围：-40°C 至 +150°C（-40°F 至 302°F）

Danfoss Hansen MQD and MQDB Catalog free download
Fact sheet > Danfoss Hansen. MQD and MQDB

Danfoss Hansen MQD and MQDB
Fact sheet > Danfoss Hansen. MQD and MQDB

Danfoss Hansen. MQD and MQDB
Danfoss Hansen MQD and MQDB are designed for Oered with ISO 11926-3 O-ring boss, BSPP and hose tail single-phase (water/glycol) systems for liquid cooling terminal ends. of electronics. This product is compliant to NVIDIA Quick Disconnect (MQD & MQDB) Specication 3.2 and can be interchanged with vendors compliant to this specication.

Product Features
- Stainless steel 304 material and EPDM seals
- Color identification (red and blue) for hand mate MQD
- Available in 3 different sizes (MQD02, MQD03, MQD04)
- All parts are 100 % helium-leak tested
- Operating temperature range.: -40° C to +150 ° C (-40°F to 302°F)

应用场景与市场

- 电子设备技术冷却系统（TCS）
- 数据中心液冷系统

Applications & Markets

- Technology Cooling System (TCS) for Electronics
- Data Center Liquid Cooling

流量数据

- MQD03：流速 V=5 米 / 秒，流体为 60°F（约 15.6°C）水，流量 0.145（单位结合上下文为升 / 分钟）
- MQD04：（注：原文未提供具体数值，需参考相关图表）

AI算力高需求加速芯片迭代，性能升级的同时功耗显著增长，同时带动数据中心单机柜功率增加，传统散热范围受限。英伟达GB200NVL36及NVL72整机柜的TDP（热设计功耗）甚至将高达70kW及近140kW，需要搭配水冷方案以有效解决散热问题。这表明，随着AI服务器功率的提升，对高效散热方案的需求也在不断增加。随着液冷技术的不断成熟和市场需求的增加，市场空间不断扩大，机构预计到2030年全球市场将达到213亿美元。英伟达明年的AI超级芯片出货目标为650万颗，其中GB200预计将占据70%的份额。随着GB200NVL36及NVL72整机柜的广泛应用，这些零部件的需求也将随之增加。

Danfoss丹佛斯新型体积更小的NVQD液冷快换接头材质为不锈钢，EPDM密封，单手连接或断开，连接力小，轻松连接，操作非常方便。Cv值高，高流量低压降。接头本体色带清晰，阴接头有色套筒，阳接头有色密封。全部100% 氦气检测出厂。Danfoss的新通用快速断开NVQD液冷快换接头为液体冷却提供了出色的性能和可靠性，从而确保了关键应用的最高性能。该液冷快换接头通过现代数据中心的精确冷却要求进行了设计，通过强大的设计，长期使用寿命和较低的维护，推动了强劲的投资回报。

Danfoss | Produced by Power Solutions I October 2025 AM521139373386en-000101
Fact sheet > Danfoss Hansen. MQD and MQDB
Physical characteristics
Body Nominal ow Max. Operating Min. Burst Rated Force to Fluid Size diameter Pressure Pressure Flow connect Loss
(in) (mm) (bar) (psi) (bar) (psi) (lpm) (gpm) N max. cc. max.
MQD02 3.3 7 100 21 300 2.04 0.55 51 0.02
MQD03 4.9 7 100 21 300 4.54 1.2 55 0.023
MQD04 6.4 7 100 21 300 6.81 1.8 63 0.025

Applications & Markets
- Technology Cooling System (TCS) for Electronics
- Data Center Liquid Cooling

Flow Data MQ03 Flow Data MQ04

Flow rate (LPM) 0,04 0,4 4 40
1,45 0,1
0,01

Pressure drop (Bar) Pressure drop (PSI)
Water at 60° F Flow rate (GPM)
MQD(B)04 Straight to straight con.g
3 | . Danfoss | Produced by Power Solutions I October 2025 AM521139373386en-000101
Fact sheet > Danfoss Hansen. MQD and MQDB

Figure 4 (a, b)

Figure 6 (a, b)
Series Order Part Color Nom END Dimensions Description Number Number Flow dia TYPE A B C D E F J H1 H2 H3 Fig
12022881 ML2MQS43RD RED Hand Mate Socket 12022882 ML2MQS43BL BLUE Hand Mate Plug, 12022869 ML2MQPEL9025HCRD RED elbow 12022870 ML2MQPEL9025HCBL BLUE Hand Mate Plug, 12022900 ML2MQP25HCRD RED straight 12022901 ML2MQP25HCBL BLUE Blind Mate, Socket 12022898 ML2MQBS43 -Blind Mate, Plug 12022907 ML2MQBP - (mm) 3,3 3,3 3,3 3,3 3,3 3,3 3,3 3,3 T1/T2/T3/HOSE SIZE 7/16-20 UNF 2A 7/16-20 UNF 2A Hose barb -04 size Hose barb -04 size Hose barb -04 size Hose barb -04 size 7/16-20 UNF 2A Floating Body (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) 25,67 15,37 18,00 ----15,9 --25,67 15,37 18,00 ----15,9 --24,20 24,50 31,00 17,7 6,65 -10,50 ---24,20 24,50 31,00 17,7 6,65 -10,50 ---39,20 15,00 --6,65 -10,50 ---39,20 15,00 --6,65 -10,50 ---25,90 15,60 16,85 ----15,9 --23,40 13,90 13,50 8,5 6,65 8,8 ---- 1 1 3 3 4a 4a 5a 6a

Hand Mate Socket Hand Mate Plug, elbow Hand Mate Plug, straight, hose tail Blind Mate, Socket Blind Mate, Plug 11359567 11359568 11359572 11359557 11359559 11359583 11359564 11359565 11359561 11359584 11359563 11359569 ML3MQS25MBSRD ML3MQS25MBSBL ML3MQPEL9043ORMRD ML3MQPEL9043ORMBL ML3MQPEL9025HCRD ML3MQPEL9025HCBL ML3MQP43ORMRD ML3MQP43ORMBL ML3MQ25MBSRD ML3MQ25MBSBL ML3MQ25MBS ML3MQBP RED BLUE RED BLUE RED BLUE RED BLUE RED BLUE -- 4,9 4,9 4,9 4,9 4,9 4,9 4,9 4,9 4,9 4,9 4,9 4,9 G 1/4-19 BSPP G 1/4-19 BSPP 7/16-20 UNF 2A 7/16-20 UNF 2A Hose barb -04 size Hose barb -04 size 7/16-20 UNF 2A 7/16-20 UNF 2A G 1/4-19 BSPP G 1/4-19 BSPP G 1/4-19 BSPP Floating Body 25,25 25,25 26,00 26,00 26,00 26,00 35,40 35,40 39,00 39,00 25,25 23,40 14,45 14,45 20,00 20,00 24,50 24,50 27,50 27,50 31,00 31,00 14,45 14,10 18,00 18,00 28,00 28,00 32,50 32,50 16,10 16,10 --18,00 11,10 --17,9 17,9 17,9 17,9 -----8,1 --8,8 8,8 8,8 8,8 8,8 8,8 8,8 8,8 -8,8 -----------10,00 --12,40 12,40 12,40 12,40 13,90 13,90 17,40 17,40 -- 17,0 17,0 --------16,0 - ------15,0 15,0 ---- --------15,0 15,0 -- 1 1 2 2 3 3 4b 4b 4b 4b 5a 6b
Hand Mate Socket Hand Mate Plug, elbow Hand Mate Plug, straight Blind Mate, Socket Blind Mate, Plug Blind Mate, Compact Socket 11345074 11345075 11345040 11345067 11345073 11345061 11345082 11345092 11369766 ML4MQS37MBSRD ML4MQS37MBSBL ML4MQPEL9043ORM-ML4MQPEL9043ORM-ML4MQP43ORMRD ML4MQP43ORMBL ML4MQBS37MBS ML4MQBP ML4MQBS37MBS11 RED BLUE RED BLUE RED BLUE --- 6,4 6,4 6,4 6,4 6,4 6,4 6,4 6,4 6,4 G 1/4-19 BSPP G 1/4-19 BSPP 7/16-20 UNF 2A 7/16-20 UNF 2A 7/16-20 UNF 2A 7/16-20 UNF 2A G 1/4-19 BSPP Floating Body G 3/8-19 BSPP 31,60 31,60 30,75 30,75 30,50 30,50 31,30 28,60 31,30 21,80 21,80 22,95 22,95 38,50 38,50 21,50 16,10 21,50 21,00 21,00 32,00 32,00 18,10 18,10 21,60 14,30 19,00 --22,1 22,1 ---8,6 19,0 --11,07 11,07 11,07 11,07 -11,07 - -------12,30 - --13,25 13,25 13,00 13,00 --- 20,0 20,0 ----19,0 -17,9 ----17,0 17,0 --- --------- 1 1 2 2 4b 4b 5b 6a 5b

Connected Length for Hand mate mounting face on socket to mounting face on plug = B+J Refer MQD spec for more details
4 | . Danfoss | Produced by Power Solutions I October 2025 AM521139373386en-000101
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