Pneumatic Products, Standard Couplings & Nipples

Series 331, DN 7

  • One-hand operated
  • Strong and durable
  • High-flow capacity

Series 331 couplings offer high-flow capacity and are insensitive to vibrations. One-hand operated with steel components for strength and durability.


Series 331, DN 7
Technical data
Nominal flow diameter: 7 mm (9/32")
Air flow: 1600 l/min (56.5 CFM)
Max. working pressure: 16 bar (232 PSI)
Min. burst pressure: 64 bar (928 PSI)
Connection force: 65 N
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material coupling: Zinc-plated steel
Material nipple: Hardened zinc-plated steel
Interchangeable with: Atlas Copco QIC10, Rectus 33, Tema 1650
Standards: AC Q10, 7 mm
Markets: Global

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

Couplings Part No. Connection
Hose connection 10 331 10021033110026.3 mm (1/4")
 10 331 10031033110038 mm (5/16")
 10 331 100410331100410 mm (3/8")
 10 331 100510331100513 mm (1/2")
Male thread 10 331 1152103311152R 1/4"
 10 331 1154103311154R 3/8"
 10 331 1155103311155R 1/2"
Female thread 10 331 1202103311202G 1/4"
 10 331 1204103311204G 3/8"
 10 331 1205103311205G 1/2"


Nipples Part No. Connection
Hose connection 10 331 50011033150015 mm (3/16")
 10 331 50021033150026.3 mm (1/4")
 10 331 50031033150038 mm (5/16")
 10 331 500410331500410 mm (3/8")
 10 331 500510331500513 mm (1/2")
Male thread 10 331 5152103315152R 1/4"
 10 331 5154103315154R 3/8"
 10 331 5155103315155R 1/2"
 10 331 5251103315251G 1/8"
 10 331 5252103315252G 1/4"
 10 331 5254103315254G 3/8"
Female thread 10 331 5202103315202G 1/4"


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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