Hydraulic Products, ISO B Steel Couplings & Nipples

Series 575, DN12.5

  • ISO B Standard
  • Sturdy design
  • Working pressure up to 4060 PSI (280 bar)


CEJN Series 575 features quick-connect couplings and nipples are manufactured according to ISO Standard 7241-1 B. The solid design makes them particularly suitable for strenuous applications in the iron, steel, oil, food and automobile industry.


The couplings and nipples are also available in four other sizes; DN 6.3 (Series 375), DN 10 (Series 475), DN 20 (Series 675), DN 25 (Series 775). For a stainless steel version see Series 576.

Couplings Part No. Connection Length Diameter Hexagon Seal
Female thread 10 575 1205 105751205G 1/2"73.94227NBR
 10 575 1405 1057514051/2" NPT73.94227NBR


Nipples Part No. Connection Length Diameter Hexagon Seal
Female thread 10 575 6205 105756205G 1/2"462927NBR
 10 575 6405 1057564051/2" NPT462927NBR


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: 12.5 mm (1/2")
Max. Suggested Flow: 90 l/min ( GPM UK)
Max. working pressure connected: 28.0 MPa
Max. working pressure disconnected: 28.0 MPa
Min. burst pressure connected: 100.0 MPa
Min. burst pressure disconnected: 100.0 MPa
Temperature range: -20°C — +100°C (-4°F — +212°F)
Material coupling: Steel (zinc plating)
Material nipple: Hardened steel (zinc plating)
Material seal: Nitrile (NBR)
Connectability: Without pressure
Disconnection under pressure: Not allowed
Pressure drop chart
Pressure drop, PSI Series 575, DN12.5 Flow, GPM

Available files for download

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