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Series 577, DN9 Stainless steel

  • High resistance to corrosion
  • Durable and robust to tolerate long periods of connection
  • No-spill sealing suitable for thermal management


This disconnect series is easy to manoeuvre with its one-hand operation. The Non-Drip stainless steel series 577 in DN9 is especially suitable for cooling electronics, as it provides long-term connection with non-spill performance upon disconnection to protect sensitive electronic equipment. The series is available in three configurations: double shut-off, single shut-off and straight through. Series 577 is available with features such as colour-coding and/or key coding for extra protection against cross connection. Optional sealing material is available upon request.


The series is offered in four additional dimensions: series 277, 477, 677 and 777. For brass version, please refer to series 567. Additional brass sizes are series 267, 467, 667 and 767. If you can’t find a product that meets your requirements, don’t hesitate to contact us, and we’ll put our R&D department at your disposal. Applications: High-performance computing racks/switch blades, chassis manifolds, cold plate, rack CDU manifolds, GPU manifolds, LED equipment, fuel cells, graphic cards, theatre projectors, medical imaging equipment, IGBTs, power converters, power inverters, rectifiers, industrial drives.

Technical data

Nominal flow diameter 9.0 mm (0.4″)
Water flow (double shut-off) 76 l/min (16.7 GPM UK)
Max. working pressure 20 bar (290 PSI)
Min. burst pressure 80 bar (1160 PSI)
Temperature range -5°C — +205°C (23°F — +401°F)
Material coupling Stainless steel, AISI 316
Material nipple Stainless steel, AISI 316
Kv (double shut-off) 2.11
Cv (double shut-off) 2.44
Comment Single shut-off must utilize valved coupling and valveless nipple


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Technical data:

Couplings (Socket) Part No. Connection Seal Length Diameter Hexagon
Female thread 10 577 1220 G 1/2″ (BSP), green code* EPDM 52.5 34 27
Nipple (Plug) Part No. Connection Seal Length Diameter Hexagon
Female thread 10 577 6220 G 1/2″ (BSP), green code* EPDM 56.5 29 27