Thermal Control Products, Non-Drip Couplings & Nipples

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. http://www.cejn.com/upload/download/Brochures/SERIES-567-577-WATER-FLOW-CEJN.pdf (Water Flow Series 577 PDF)

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.

Series 577, DN9 Stainless steel
Technical data
Nominal flow diameter: 9.0 mm (11/32")
Water flow (double shut-off): 35.2 l/min (7.7 GPM UK)
Max. working pressure: 20 bar (290 PSI)
Min. burst pressure: 80 bar (1160 PSI)
Temperature range: -20°C — +80°C (-4°F — +176°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: Also available in singel shut-off or straight through version.

Water flow capacity measured at 1.0 bar (14.5 PSI) pressure drop.

Fluid Flow
Pressure drop, bar (PSI)
Series 577, DN9 Stainless steel
Flow, l/min. (GPM UK)
Couplings(Socket) Part No. Connection Seal Length Diameter Hexagon
Female thread 10 577 1220105771220G 1/2" (BSP), green codeEPDM52.53427


Nipple (Plug) Part No. Connection Seal Length Diameter Hexagon
Female thread 10 577 6220105776220G 1/2" (BSP), green codeEPDM56.52927


Check with an authorized CEJN distributor for availability and prices. Other connections and sealing material on request. Some part numbers may be subject to minimum order quantities. CEJN reserves the right to make changes without further notification. Thread connections are listed according to ISO Standards. All measurements are in mm.

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Available files for download