Danfoss Power Solutions jumps into the liquid cooling game with new quick-disconnect couplings. Are they any good?
Danfoss has launched its Hansen® MQD and MQDB quick-disconnect couplings, designed for single-phase water/glycol cooling systems, targeting electronics and data centres. The MQD hand-mate and MQDB blind-mate models feature a compact design, supposedly ideal for those densely packed server racks.
Compatibility is, apparently, a big deal – these couplings are designed to be fully interchangeable with other MQD offerings. The marketing blurb emphasises reliability, high flow rates, and ease of installation and maintenance.
Each component, we're told, undergoes helium-leak testing – a reassuring touch, although sounds a bit fussy for mass production. Colour-coded connectors are included for simple identification, which should save a few installation headaches.
They come in sizes 02, 03, and 04, catering to flow rates between 2 to 6.8 litres per minute.
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Designed for robust performance and safety, these couplings also aim for compatibility. Chinmay Kulkarni, Senior Product Manager at Danfoss Power Solutions, boldly claims, "Danfoss is proud to have shaped the MQD specification, setting benchmarks for reliability and performance in liquid cooling for AI and high-performance computing. As heat loads increase, liquid cooling is no longer optional — it’s essential."
A strong statement – implying if you're not liquid cooling, you're yesterday's news.
He added that the MQD and MQDB couplings offer robust performance, safety, and compatibility, making them ideal for next-gen cooling systems. These couplings are made from 304 stainless steel, with EPDM seals for added durability.
They also come with ISO 11926-3 O-ring boss, BSPP, and hose tail terminal ends for application versatility. An operating temperature range of −40°C to 150°C (−40°F to 302°F) covers a broad spectrum of environments.
Other recent news from Danfoss includes: Danfoss BOCK HGX56 Featured At RETA 2025, Danfoss HVAC Tech At SuperComputing 2025, Danfoss & ANEO Retail: Nordic Energy Optimization and Danfoss Strengthens US-EU Economic Partnerships.
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Are these connectors really the "ideal choice" for cooling systems? Only time – and rigorous testing – will tell. Danfoss is keen to emphasise how these couplings deliver robust performance, safety, and compatibility, positioning them as the "ideal choice" for compute trays.
Built from 304 stainless steel with EPDM seals, they should hold up reasonably well against corrosion. The availability of various terminal ends (ISO 11926-3 O-ring boss, BSPP, and hose tail) adds a touch of versatility.
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Just another coupling, or the future of cooling? We shall see.
