CEJN® Series 291 Couplings - Industrial Ancillaries

CEJN® Series 291 Button Style Couplings

  • CEJN® Series 291 couplings are compact and light quick-connect couplings, 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 5.5 mm
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)


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

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