Hydraulic Products
X65 Range - Premium ISO 16028 Flat Face Quick Couplings
Series 665, DN16 Steel
- Flat-Face design
- One-hand operated
- Extra security locking
CEJN Series 665 is a Flat-Face quick-connect coupling according to and exceeding the ISO 16028 Standard for low- and medium-pressure hydraulic applications. The Flat-Face design minimizes spillage during connection and disconnection. Series 665 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 when disconnected to prevent dust and debris from entering the system. Series 665 couplings feature manual security locking as added protection against involuntary disconnection.
The couplings and nipples are also available in other sizes; DN 5 (Series 165), DN 6.3 (Series 265), DN 10 (Series 365), DN 12.5 (Series 565), DN 19 (Series 765), DN 25 (Series 065). Nipples with pressure eliminator available under Series 664.
| Technical data |
| Nominal flow diameter: | 16 mm (5/8") |
| Rated flow: | 74 l/min (16.3 GPM UK) |
| Max. working pressure connected: | 40.0 MPa |
| Max. working pressure disconnected: | 40.0 MPa |
| Min. burst pressure connected: | 120.0 MPa |
| Min. burst pressure disconnected: | 120.0 MPa |
| Static pressure applications: | Approved to max. working pressure |
| Dynamic pressure applications: | Max. working pressure 25 MPa according to ISO 16028 |
| Temperature range: | -30°C — +100°C (-22°F — +212°F) |
| Material coupling: | Steel (zinc passivation) |
| Material nipple: | Hardened steel (zinc passivation) |
| Material seal: | Nitrile (NBR), other sealing materials on request |
| Connectability: | Without pressure |
| Disconnection under pressure: | Not allowed |
Rated flow is measured at 0.1 MPa pressure drop.
Pressure drop chart
Pressure drop, MPa
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Flow, l/min. (GPM UK)
| Couplings |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
106651201 | G 3/4" | 79.8 | 41.2 | 36 | NBR |
| | 106651211 | G 3/4" | 79.8 | 41.2 | 36 | FPM |
| | 106651401 | 3/4" NPT | 79.8 | 41.2 | 36 | NBR |
| | 106651601 | 1 1/16"-12 ORB | 79.8 | 41.2 | 38 | NBR |
|
| Push-pull Couplings |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
106651281 | G 3/4" | 79.8 | 41.2 | 36 | NBR |
|
| Nipples |
Part No. |
Connection |
Length |
Diameter |
Hexagon |
Seal |
| Female thread |
106656201 | G 3/4" | 74.9 | 39.2 | 36 | PUR |
| | 106656211 | G 3/4" | 74.9 | 39.2 | 36 | FPM |
| | 106656401 | 3/4" NPT | 74.9 | 39.2 | 36 | PUR |
| | 106656601 | 1 1/16"-12 ORB | 74.9 | 41.2 | 38 | NBR |
|