CEJN® Series 165 Couplings

CEJN® Series 165 is a Flat-Face quick-connect coupling for low- and medium-pressure hydraulic applications. The Flat-Face design minimizes spillage during connection and disconnection. Series 165 couplings require only one hand for operation, making connection and disconnection fast and easy. Series 165 couplings feature manual security locking as added protection against involuntary disconnection.

  • The couplings and nipples are also available in five other sizes; DN 6.3 (Series 265), DN 10 (Series 365), DN 12.5 (Series 565), DN 16 (Series 665), DN 19 (Series 765).
Technical Data Summary
Specification Details  
Nominal Flow Diameter 5mm
Coupling Material Steel (Zinc Passivation)
Nipple Material Hardened Steel (Zinc Passivation)
Seal Material Nitrile
Maximum Working Pressure Connected  
  720 bar
Maximum Working Pressure Disconnected  
  720 bar
Maximum Burst Pressure Connected  
  1800 bar
Maximum Burst Pressure Disconnected  
  1800 bar
Standard Flow Rate  
  7.5 l/min (2.0 GPM UK)
Temperature Range  
  -30°c to + 100°c


  • Interchangeable with all brands that conform to the dimensions of ISO 16028