Danfoss Power Solutions has launched its new Hansen MQD and MQDB quick-disconnect couplings, developed for single-phase water/glycol cooling systems used in electronics and data center liquid cooling applications. Designed for compact environments such as high-density server racks, the MQD hand-mate and MQDB blind-mate couplings are fully interchangeable with MQD couplings from other manufacturers.
The new couplings are engineered to provide high flow rates and easy installation and maintenance. All units undergo helium-leak testing to ensure system integrity. Color-coded connectors simplify component identification. The couplings are available in sizes 02, 03, and 04, with nominal flow diameters of 3.3, 4.9, and 6.4 millimeters, respectively, and flow rates ranging from 2 to 6.8 liters per minute.
Constructed with 304 stainless steel and EPDM seals, the couplings are designed for corrosion resistance and long-term durability. They are available with ISO 11926-3 O-ring boss, BSPP, and hose tail terminal ends, and operate in a temperature range from -40°C to 150°C (-40°F to 302°F).
“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,” said Chinmay Kulkarni, Senior Product Manager, Data Center, Danfoss Power Solutions. “Our MQD and MQDB couplings deliver robust performance, safety, and compatibility, making them the ideal choice for next-generation cooling systems for compute trays.”
