Fluid Products, Classic Couplings & nipples

Series 322

  • One-hand operated
  • High burst/working pressure
  • Extremely high-flow capacity

Series 322 offers a high working pressure rating and high-flow capacity, making it ideal for high-pressure water applications, such as high-pressure cleaning lines. Available with valved or valveless couplings, the series requires only one hand for operation – just one of the reasons why this original CEJN series continues to be requested. Other connections and sealing materials are available on requeast.


Series 322
Technical data
Nominal flow diameter: 7.4 mm (9/32")
Water flow (single shut-off): 90 l/min (19.8 GPM UK)
Max. working pressure: 200 bar (2900 PSI)
Min. burst pressure: 600 bar (8702 PSI)
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material coupling: Nickel-plated brass/steel
Material nipple: Hardened steel (chemical nickel-plated/zinc-plated)
Cv (single shut-off): 3.14
Kv (single shut-off): 2.70
Fluid flow
Pressure drop, bar (PSI)
Series 322
Flow, l/min. (GPM UK)
Couplings without valve Part No. Connection Seal Length Diameter Hexagon
Male thread 10 322 0252103220252G 1/4"NBR4523.420
 10 322 0254103220254G 3/8"NBR4723.420
 10 322 0255103220255G 1/2"NBR4925.422
Female thread 10 322 0202103220202G 1/4"NBR47.423.420
 10 322 0204103220204G 3/8"NBR49.425.422
 10 322 0214103220214G 3/8"FPM49.625.422


Couplings with valve Part No. Connection Seal Length Diameter Hexagon
Female thread 10 322 1202103221202G 1/4"NBR56.323.421
 10 322 1204103221204G 3/8"NBR56.325.422
Male thread 10 322 1252103221252G 1/4"FPM56.323.421


Nipples without valve Part No. Connection Seal Length Diameter Hexagon
Male thread 10 322 5162103225162R 1/4"-38.516.214
 10 322 5164103225164R 3/8"-40.519.617
 10 322 5264103225264G 3/8"-37.519.617
Female thread 10 322 5212103225212G 1/4"-3619.617
 10 322 5214103225214G 3/8"-37.523.120
 10 322 5202103225202G 1/4"-36.519.617
 10 322 5204103225204G 3/8"-3823.120


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