Cejn 320 Series Pneumatic Couplers & Fittings

Cejn 320 Series Pneumatic Couplers & Fittings

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 and one-hand operated and offers long service life
  • Male threads on the couplings and nipples feature pre-applied thread sealant
  • The Series 320 vented safety version is disconnected in two stages in order to vent the coupling and minimise the risk of sudden component separation, which has the potential to cause operator injury
  • FuIly automatic operation ensures easy handling
  • The vented safety version complies with ISO Standard 4414 and EN 983

Technical Data


Nominal Flow Diameter7.6mm
Flow Capacity2100L/min
Max. Working Pressure16 bar
Min. Burst Pressure140 bar
Temperature Range-20 to 100°C
Material CouplingZinc Plated Steel/Brass
Material NippleHardened Zinc-Plated Steel


Nominal Flow Diameter7.6mm
Flow Capacity1900L/min
Max. Working Pressure16 bar
Min. Burst Pressure64 bar
Temperature Range-20 to 80°C
Material CouplingZinc Plated Steel/Brass


CouplersPart No.ConnectionLengthDiameterHexagon
Hose Connection10 320 100513mm (1/2")68.0mm23.4mm19.0mm
Male Thread10 320 1155R 1/2"55.5mm25.4mm22.0mm
Female Thread10 320 1202G 1/4"60.0mm23.4mm20.0mm
10 320 1205G 1/2"59.5mm28.9mm25.0mm
Stream-Line Connection10 320 106611 x 16mm68.0mm27.7mmBody/Nut
Vented Safety Couplings
Part No.ConnectionLengthDiameterHexagon
Hose Connection10 320 300513mm (1/2")75.0mm28.0mm19.0mm
NipplesPart No.ConnectionLengthDiameterHexagon
Hose Connection10 320 5005
13mm (1/2")44.5mm17.0mm-
Male Thread10 320 5152R 1/4"38.5mm16.2mm14.0mm
10 320 5154R 3/8"40.5mm19.6mm17.0mm
10 320 5155R 1/2"47.0mm25.4mm22.0mm
Female Thread10 320 5205G 1/2"41.5mm31.2mm27.0mm
Stream-Line Connection10 320 506611 x 16mm53.3mm27.7mm24.0mm