Pneumatic Products, Lightweight Couplings

Series 320, DN 7.6

  • Extremely high flow capacity
  • Easy to connect
  • Strong and durable


Series 320 couplings feature the original high-flow valve design upon which all other CEJN pneumatic couplings are based. Their popularity has made Series 320 a European standard. The series is easy-to-handle, one-hand operated and offers long service life. Male threads on the couplings and nipples feature pre-applied thread sealant. This aluminum lightweight version offers extra low weight with the same quality performance as the standard version. And since aluminum is a non-ferrous material, Series 320 Aluminum couplings offer low magnetic interference and will not generate sparks.


Series 320 is also available in Standard, Vented Safety, Soft-Line and Multi-Link versions.

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.
Technical data
Nominal flow diameter: 7.6 mm (5/16")
Air flow: 2100 l/min (74.1 CFM)
Max. working pressure: 16 bar (232 PSI)
Min. burst pressure: 140 bar (2030 PSI)
Connection force: 70.7 N
Temperature range: 20°C — +100°C (68°F — +212°F)
Material coupling: Aluminum
Standards: CEJN Original Standard, Eurostandard 7.6 (7.4)
Markets: Global

Flow capacity is measured at 87 PSI (6 bar) inlet pressure, and pressure drop at 7 PSI (0. bar).

Air Flow
Pressure drop, PSI (bar) Series 320, DN 7.6 Flow, CFM (l/min)

Available files for download

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