Ultra High-Pressure Hydraulic Products, Screw-to-Connect Couplings & Nipples

Series 232, DN6.3

Series 232 is a series of robust screw-to-connect couplings. The couplings are also available with teeth lock function for increased vibration resistance. Compliance with ISO 14540 ensures complete interchangeability with other brands following the same standard. High flow rate capacity, high quality and ability to withstand harsh conditions, make them an ideal fit for many different applications. With the teeth lock function, the connection is more vibration resistant to minimize the risk of accidental unscrewing and costly downtime.

Couplings Part No. Connection Length Diameter Hexagon Rec. torque (Nm)
Female thread 10 232 1402 1023214021/4" NPT60292150-60
Male thread 10 232 1451 1023214511/8" NPT56.4292140-50
 10 232 1452 1023214521/4" NPT60.4292150-60


Nipples Part No. Connection Length Diameter Hexagon Rec. torque (Nm)
Female thread 10 232 6402 1023264021/4" NPT33.826.72150-60
Male thread 10 232 6451 1023264511/8" NPT50.326.72140-50
 10 232 6452 1023264521/4" NPT54.326.72150-60


Couplings with teeth lock Part No. Connection Length Diameter Hexagon Rec. torque (Nm)
Female thread 10 232 1442 1023214421/4" NPT60292150-60
Male thread 10 232 1492 1023214921/4" NPT60292150-60


Nipples with teeth lock Part No. Connection Length Diameter Hexagon Rec. torque (Nm)
Female thread 10 232 6442 1023264421/4" NPT54.2291850-60
Male thread 10 232 6492 1023264921/4" NPT54.2291850-60


Check with an authorized CEJN distributor for availability and prices. Other connections and sealing material on request. Some part numbers may be subject to minimum order quantities. CEJN reserves the right to make changes without further notification. Thread connections are listed according to ISO Standards. All measurements are in mm.
Technical data
Nominal flow diameter: 6.3mm (1/4")
Flow capacity: 16.1 l/min (3.5 GPM UK)
Max. working pressure: 72.0 MPa
Min. burst pressure connected: 216.0 MPa
Min burst pressure coupling disconnected: 180.0 MPa
Min burst pressure nipple disconnected: 149.0 MPa
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material coupling: Zinc plated steel
Material nipple: Zinc plated steel
Material seal: Nitrile NBR

Flow capacity is measured at 0.4 MPa pressure drop.

Oil Flow
Pressure drop, MPa (PSI) Series 232, DN6.3 Flow, l/min. (GPM UK)

Available files for download

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