Fluid Products, Non-Drip Stainless Steel Couplings & Nipples

DN9 (Series 577)

  • Non-Drip design
  • Unlimited combination possibilities
  • Different safety levels to avoid mixing media

With unlimited combination possibilities, CEJN Series 577 non-drip modular couplings are adaptable to virtually all applications and system requirements. The Non-Drip design of the Series ensures practically zero spillage and eliminates pollution and air inclusion during connection and disconnection. The Series is available in three configurations: straight through, single shut-off and double shut-off. Series 577 is also available with color-coding and/or key coding for extra safety. Optional seal material upon request.


The Series is also available in four other sizes: Series 277, 477, 677 and 777. Please refer to Series 567 for an all brass version. For other sizes in brass, refer to Series 267, 467, 667 and 767.

DN9 (Series 577)
Technical data
Nominal flow diameter: 9.0 mm (11/32")
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): 2.28
Cv (double shut-off): 2.65
Comment: Single shut-off must utilize valved coupling and valveless nipple

Flow capacity is measured at 4 bar (58 PSI) pressure drop.

Fluid Flow
Pressure drop, bar (PSI)
DN9 (Series 577)
Flow, l/min. (GPM UK)
Black: Double shut-off, Grey: Single shut-off, Light grey: Straight through
Couplings without valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 577 0210105770210G 1/2"FPM52.53427
 10 577 04101057704101/2" NPTFPM68.22927


Couplings with valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 577 1210105771210G 1/2"FPM52.53427
 10 577 14101057714101/2" NPTFPM68.22927


Nipples without valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 577 5210105775210G 1/2"FPM56.52927
 10 577 54101057754101/2" NPTFPM552927


Nipples with valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 577 6210105776210G 1/2"FPM56.52927
 10 577 64101057764101/2" NPTFPM552927


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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