Fluid Products, Classic Couplings & Nipples

Series 412

  • One-hand operation
  • Extremely high-flow capacity
  • Suitable for high-pressure water applications


The 2900 PSI (200 bar) working pressure of Series 412 makes this product line suitable for high-pressure water applications and high-pressure cleaning. Included in the series are valved and valveless couplings and valveless nipples. Only one hand is required for operation. Other sealing materials are available upon request.


The Series is also available with brass nipples (Series 411), two-way shut-off (Series 414), and stainless steel construction (Series 416). Please refer to the CEJN Pneumatic range for specialized versions of the Series with nickel-plated steel/brass construction and as Vented Safety (Series 410).

Couplings Part No. Connection Seal Length Diameter Hexagon  
Male thread (valveless) 10 412 0255 104120255G 1/2"NBR50.127.724 
 10 412 0455 1041204551/2" NPTNBR65.727.724 
Female thread 10 412 0405 1041204051/2" NPTNBR63.328.925 
Female thread (valved) 10 412 1205 104121205G 1/2"NBR63.328.925 
Female thread (valveless) 10 412 0205 104120205G 1/2"NBR63.328.925 


Nipples (valveless) Part No. Connection Seal Length Diameter Hexagon Remark
Male thread 10 412 5265 104125265G 1/2"-42.325.422Hardened and chemical nickel-plated steel
Female thread 10 412 5205 104125205G 1/2"-4431.227Hardened and chemical nickel-plated steel


Nipples Part No. Connection Seal Length Diameter Hexagon  
Male thread 10 410 5154 104105154R 3/8"-4119.617 
 10 410 5155 104105155R 1/2"-47.525.421 
Female thread 10 410 5204 104105204G 3/8"-3823.120 
 10 410 5205 104105205G 1/2"-43.531.227 


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.
Technical data
Nominal flow diameter: 10.4 mm (13/32")
Water flow (single shut-off): 122 l/min (26.8 GPM UK)
Water flow (straight through): 167 l/min (36.7 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
Kv (single shut-off): 3.86
Cv (single shut-off): 4.49
Kv (straight through): 5.01
Cv (straight through): 5.83

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

Fluid Flow
Pressure drop, PSI Series 412 Flow, GPMBlack: Single shut-off, Grey: Straight through

Available files for download

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