CEJN® Series 564 Adaptors

CEJN® Series 564 is a Flat-Face quick-connect nipple with a built-in pressure eliminator. The nipple is according to and exceeds the demands in the ISO 16028 Standard for low- and medium-pressure hydraulic applications. The Flat-Face design minimizes spillage during connection and disconnection. The pressure eliminator allows for connection with residual/trapped pressure on the nipple side. The nipple Series 564 connects with couplings in Series 565, Series 566 and Series 562.

  • The pressure eliminator nipples are also available in four other sizes; DN 6.3 (Series 264), DN 10 (Series 364), DN 16 (Series 664), DN 19 (Series 764). For steel couplings in accordance with ISO 16028 see Series 565. Stainless steel versions of the standard are available in Series 566. Series 562 feature an interchangeable steel coupling designed for lower pressures.
Technical Data Summary
Specification Details  
Nominal Flow Diameter 6.3mm
Adaptor Material Hardened Steel (Zinc Passivation)
Seal Material Nitrile
Maximum Working Pressure Connected  
  400 bar
Maximum Working Pressure Disconnected  
  400 bar
Maximum Burst Pressure Connected  
  1200 bar
Maximum Burst Pressure Disconnected  
  1200 bar
Standard Flow Rate  
  77 l/min (20.3 GPM UK)
Temperature Range  
  -30°c to + 100°c


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

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