Thermal Control Products, Non-Drip Couplings & Nipples

Series 667, DN14 Brass

  • One-hand-operated coupling to simplify maintenance and serviceability
  • Safety lock to prevent unintentional disconnection
  • Precision-made no-spill flush-face connectors for liquid cooling

Thermal control requires safe, easy and reliable quick connect couplings. CEJN series 667 with DN14 are affordable non-drip modular couplings adaptable to virtually all applications and system requirements. The series ensures practically no spillage and eliminates pollution and air inclusion. Tests confirm that the Non-Drip series withstands over 10,000 connection cycles. Series 667 quick disconnects are available in double shut-off, single shut-off and straight through versions. Upon request they come in colour-coding and/or key coding for extra safety. Optional sealing material can be arranged.

The series is available in four other sizes: series 267, 467, 567 and 767. Please refer to series 677 for an all-stainless steel version. Additional sizes in stainless steel are series 277, 477, 577 and 777. If you can’t find a product that meets your requirements, don’t hesitate to contact us, and we’ll put our R&D department at your disposal. (Water Flow Series 667 PDF)

Applications: Data server chiller cooling lines, chassis manifolds, IGBTs, power converters, power inverters, rectifiers, industrial drives, power generators, heat exchangers, medical and industrial lasers, traction control, machine tools, solar power, alternative energy.

Series 667, DN14 Brass
Technical data
Nominal flow diameter: 14.0 mm (1/2")
Water flow (double shut-off): 97.8 l/min (21.5 GPM UK)
Max. working pressure: 20 bar (290 PSI)
Min. burst pressure: 80 bar (1160 PSI)
Temperature range: -20°C — +80°C (-4°F — +176°F)
Material coupling: Nickel-plated brass
Material nipple: Nickel-plated brass
Kv (double shut-off): 5.87
Cv (double shut-off): 6.78
Comment: Also available in singel shut-off or straight through version.

Water flow capacity measured at 1.0 bar (14.5 PSI) pressure drop.

Fluid Flow
Pressure drop, bar (PSI)
Series 667, DN14 Brass
Flow, l/min. (GPM UK)
Couplings(Socket) Part No. Connection Seal Length Diameter Hexagon
Female thread 10 667 1220106671220G 3/4" (BSP), green codeEPDM74.74136

Nipple (Plug) Part No. Connection Seal Length Diameter Hexagon
Female thread 10 667 6220106676220G 3/4" (BSP), green codeEPDM663634

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.

Please complete the form below in order to gain access to downloadable product files. The data you provide is for internal information purposes only and will not be published or made available outside of CEJN.

Available files for download