CEJN® Series 291 Button Style Couplings

  • Compact and light quick-connect coupling, newly shaped in order to meet ergonomic and industrial design requirements. Series 291 has an easy and safe connection/disconnection and complies with ISO 4414 (safety standard). The nipple profile complies with ISO 6150 C.
Technical Data Summary
Specification Details  
Nominal Flow Diameter 5.5mm
Coupling Material Steel
Nipple Material Nickel Plated Steel
Maximum Working Pressure  
  12 bar
Maximum Burst Pressure  
  48 bar
Standard Flow Rate  
  640 l/min (22.6 CFM)
Temperature Range  
  -20°c to + 90°c (-4°F to +194°F) /td>


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

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