Series 766, DN19 Stainless Steel

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Hydraulic Products

X66 Flat-Face Stainless Steel Couplings & Nipples

Series 766, DN19 Stainless Steel

  • Flat-Face design
  • Stainless steel design
  • One-hand operation

CEJN Series 766 is a Flat-Face quick-connect coupling dimensionally in accordance to ISO 16028 Standard for low- and medium-pressure hydraulic applications. The Flat-Face design minimizes spillage during connection and disconnection. The stainless steel design makes it extra sturdy to fit applications in extreme environments. Series 766 couplings require only one hand for operation, making connection and disconnection fast and easy. Dust caps are available as accessories for both the coupling and nipple to prevent dust and debris from entering the system. Series 766 couplings also feature manual security locking as added protection against involuntary disconnection.


The couplings and nipples are also available in three other sizes; DN 6.3 (Series 266), DN 10 (Series 366), DN 12.5 (Series 566). For a steel version see Series 765. Nipples with pressure eliminator available under Series 764.

Technical data
Nominal flow diameter: 3/4" (19 mm)
Rated flow: 26.4 GPM (100 l/min)
Max. working pressure connected: 3630 PSI (250 bar)
Max. working pressure disconnected: 3630 PSI (250 bar)
Min. burst pressure connected: 14500 PSI (1000 bar)
Min. burst pressure disconnected: 14500 PSI (1000 bar)
Temperature range: -4°F — +401°F (-20°C — +205°C)
Material coupling: Stainless steel, AISI 316
Material nipple: Stainless steel, AISI 316
Material seal: Viton (FPM), other sealing materials on request
Connectability: Without pressure
Disconnection under pressure: Not allowed

Rated flow is measured at 14.0 PSI pressure drop

Pressure drop chart

Pressure drop, PSI

Flow, GPM
Couplings Part No. Connection Length Diameter Hexagon Seal
Female thread 107661211G 3/4"9946.241FPM


Nipples Part No. Connection Length Diameter Hexagon Seal
Female thread 107666211G 3/4"9946.241FPM


Thread connections are listed according to ISO Standards. All measurements are in mm. Check with an authorized CEJN distributor for availability and prices.