DN6 (Series 477)

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Fluid Products

Non-Drip Stainless Steel Couplings & Nipples

DN6 (Series 477)

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

With unlimited combination possibilities, CEJN Series 477 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 477 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, 577, 677 and 777. Please refer to Series 467 for an all brass version. For other sizes in brass, refer to Series 267, 567, 667 and 767.

Technical data
Nominal flow diameter: 6 mm (1/4Inch)
Water flow (double shut-off): 36 l/min (7.9 GPM UK)
Water flow (single shut-off): 36 l/min (7.9 GPM UK)
Water flow (straight through): 62 l/min (13.6 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
Comment: Single shut-off must utilize valved coupling and valveless nipple
Kv (double shut-off): 1.08
Cv (single shut-off): 1.26

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

Fluid Flow

Pressure drop, bar (PSI)

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 104770210G 3/8"FPM452922
 1047704103/8" NPTFPM61.22922


Couplings with valve Part No. Connection Seal Length Diameter Hexagon
Female thread 104771210G 3/8"FPM452922
 1047714103/8" NPTFPM61.22922


Nipples without valve Part No. Connection Seal Length Diameter Hexagon
Female thread 104775210G 3/8"FPM522422
 1047754103/8" NPTFPM50.52422


Nipples with valve Part No. Connection Seal Length Diameter Hexagon
Female thread 104776210G 3/8"FPM522422
 1047764103/8" NPTFPM50.52422


Thread connections are listed according to ISO Standards. All measurements are in mm. Check with an authorized CEJN distributor for availability and prices.