Pneumatic Products, Safety Lock Couplings & Nipples

Series 442, DN 10.4

  • Automatic safety-locking feature
  • Extremely high flow capacity
  • One-hand operated

Series 442 couplings withstand extremely rough handling in extra tough applications. The series features a zinc-plated steel/brass construction with a locking sleeve made of hardened zinc-plated steel. The Series offers a wide range of connections, as well as anti-hose whip nipples. The automatic safety-locking feature prevents unintentional disconnection.


Please refer to the CEJN Breathing Air range for an all-brass version (Series 441).

Series 442, DN 10.4
Technical data
Nominal flow diameter: 10.4 mm (13/32")
Air flow: 3950 l/min (139.4 CFM)
Max. working pressure: 35 bar (507 PSI)
Min. burst pressure: 140 bar (2030 PSI)
Connection force: 169.6 N
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material coupling: Zinc-plated steel/brass
Material nipple: Hardened zinc-plated steel
Standards: CEJN Original, 10.4 mm, Safetylock
Markets: Global

Flow capacity is measured at 6 bar (87 PSI) inlet pressure, and pressure drop at 0.5 bar (7 PSI).

Air Flow
Pressure drop, bar (PSI)
Series 442, DN 10.4
Flow, l/min. (CFM)
Couplings Part No. Connection
Hose connection 10 442 10031044210038 mm (5/16")
 10 442 100410442100410 mm (3/8")
 10 442 100510442100513 mm (1/2")
 10 442 100610442100616 mm (5/8")
 10 442 100710442100719 mm (3/4")
Male thread 10 442 1154104421154R 3/8"
 10 442 1155104421155R 1/2"
 10 442 1157104421157R 3/4"
 10 442 1455104421455NPT 1/2"
 10 442 1457104421457NPT 3/4"
Female thread 10 442 1204104421204G 3/8"
 10 442 1205104421205G 1/2"
 10 442 1207104421207G 3/4"
 10 442 1404104421404NPT 3/8"
 10 442 1405104421405NPT 1/2"


Nipples Part No. Connection
Hose connection 10 442 500510442500513 mm (1/2")
 10 442 500610442500616 mm (5/8")
 10 442 500710442500719 mm (3/4")
Male thread 10 442 5152104425152R 1/4"
 10 442 5154104425154R 3/8"
 10 442 5155104425155R 1/2"
 10 442 5157104425157R 3/4"
 10 442 5454104425454NPT 3/8"
 10 442 5455104425455NPT 1/2"
Female thread 10 442 5204104425204G 3/8"
 10 442 5205104425205G 1/2"
 10 442 5207104425207G 3/4"
 10 442 5405104425405NPT 1/2"


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.

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