Fluid Products, Classic Couplings & nipples

Series 604

  • One-hand operated
  • High-flow capacity
  • Low connection force

One- and two-way shut-off styles are included in Series 604 couplings that require only one hand for operation. Series 604 is suitable for a variety of fluid applications, such as water inlet and return.


Please refer to CEJN Series 606 for a stainless steel version. Straight through version available on request.

Series 604
Technical data
Nominal flow diameter: 14.5 mm (9/16")
Water flow (double shut-off): 141 l/min (31.0 GPM UK)
Water flow (single shut-off): 205 l/min (45.1 GPM UK)
Max. working pressure: 35 bar (507 PSI)
Min. burst pressure: 140 bar (2030 PSI)
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material coupling: Chrome-plated brass
Material nipple: Chrome-plated brass
Kv (double shut-off): 4.23
Cv (double shut-off): 4.92
Kv (single shut-off): 6.30
Cv (single shut-off): 7.33

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

Couplings Part No. Connection Seal Length Diameter Hexagon
Female thread 10 604 1201106041201G 3/4"NBR8347.341
 10 604 1211106041211G 3/4"FPM8347.441
 10 604 14011060414013/4" NPTNBR8347.441
 10 604 14111060414113/4" NPTFPM8347.441


Nipples with valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 604 6201106046201G 3/4"NBR81.541.636
 10 604 6211106046211G 3/4"FPM81.541.636
 10 604 64011060464013/4" NPTNBR81.541.636
 10 604 64111060464113/4" NPTFPM81.541.636


Nipples without valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 604 5201106045201G 3/4"-81.541.636
 10 604 5401106045401NPT 3/4"-81.541.636


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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