Pneumatic Products, Button Style Couplings & Nipples

Series 381, DN 8

  • Compact design
  • Complies with safety standard ISO 4414
  • Disconnects in two stages

Compact and light quick-connect coupling, newly shaped in order to meet ergonomic and industrial design requirements. Series 381 has an easy and safe connection/disconnection and are in accordance with ISO 4414 (safety standard). The nipple profile is according to ISO 6150 C.


The Series is also available in one smaller size (Series 291) and one larger size (Series 471).

Series 381, DN 8
Technical data
Nominal flow diameter: 8.0 mm (5/16")
Air flow: 1050 l/min (37.1 CFM)
Max. working pressure: 10 bar (145 PSI)
Min. burst pressure: 40 bar (580 PSI)
Temperature range: -20°C — +90°C (-4°F — +194°F)
Material coupling: Steel
Material nipple: Hardened steel
Standards: ISO 6150 C DN 8
Markets: France

Flow capacity measured at 6 bar (87 PSI) inlet pressure and pressure drop at 0.5 bar (7 PSI).

Air Flow
Pressure drop, bar (PSI)
Series 381, DN 8
Flow, l/min. (CFM)
Couplings Part No. Connection
Hose connection 10 381 30031038130038 mm (5/16")
 10 381 300410381300410 mm (3/8")
 10 381 300510381300513 mm (1/2")
Male thread 10 381 3152103813152R 1/4"
 10 381 3154103813154R 3/8"
 10 381 3155103813155R 1/2"
Female thread 10 381 3202103813202G 1/4"
 10 381 3204103813204G 3/8"
 10 381 3205103813205G 1/2"


Nipples Part No. Connection
Hose connection 10 381 50331038150338 mm (5/16")
 10 381 503410381503410 mm (3/8")
 10 381 503510381503513 mm (1/2")
Male thread 10 381 5132103815132R 1/4"
 10 381 5134103815134R 3/8"
 10 381 5135103815135R 1/2"
Female thread 10 381 5232103815232G 1/4"
 10 381 5234103815234G 3/8"
 10 381 5235103815235G 1/2"


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.

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