Breathing Air Products, Couplings & Nipples

Series 342

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


Series 342 coupling 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. The automatic safety-locking feature prevents unintentional disconnection.

Series 342
Couplings Part No. Connection Length Diameter Hexagon
Hose connection 10 342 1002 1034210026.3 mm (1/4")69.524.419
 10 342 1003 1034210038 mm (5/16")7124.419
 10 342 1004 10342100410 mm (3/8")71.524.419
 10 342 1005 10342100513 mm (1/2")69.524.419
Male thread 10 342 1152 103421152R 1/4"64.524.420
 10 342 1154 103421154R 3/8"62.524.420
 10 342 1155 103421155R 1/2"5725.422
 10 342 1452 103421452NPT 1/4"63.524.420
 10 342 1454 103421454NPT 3/8"61.524.420
 10 342 1455 103421455NPT 1/2"5625.422
Female thread 10 342 1202 103421202G 1/4"58.524.420
 10 342 1204 103421204G 3/8"61.524.420
 10 342 1205 103421205G 1/2"6128.925
 10 342 1402 103421402NPT 1/4"60.524.420
 10 342 1404 103421404NPT 3/8"60.525.422
Stream-Line 10 342 1060 1034210606.5 x 10 mm65.524.420/16
 10 342 1062 1034210628 x 12 mm68.524.420/19


Nipples Part No. Connection Length Diameter Hexagon
Hose connection 10 342 5002 1034250026.3 mm (1/4")4713-
 10 342 5004 10342500410 mm (3/8")49.514-
Male thread 10 342 5152 103425152R 1/4"4615.714
 10 342 5154 103425154R 3/8"4618.717
 10 342 5452 103425452NPT 1/4"42.715.714
Female thread 10 342 5202 103425202G 1/4"4218.717
 10 342 5204 103425204G 3/8"43.222.520
 10 342 5402 103425402NPT 1/4"41.518.717


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: 7.4 mm (9/32")
Air flow: 1950 l/min (68.8 CFM)
Max. working pressure: 35 bar (507 PSI)
Min. burst pressure: 140 bar (2030 PSI)
Temperature range: -30°C — +100°C (-22°F — +212°F)
Material coupling: Zinc-plated steel/brass
Material nipple: Hardened zinc-plated steel
Material seal: NBR
Standards: CEJN Original Standard

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

Available files for download

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