Breathing Air Products, Couplings & Nipples

Series 341

  • One-hand operated to connect
  • Automatic safety locking feature
  • Large range of connections available
  • Extremely high flow capacity

Series 341 feature a one-hand operation during connection and has an integrated safety feature that guards against unintentional disconnection. Offering an extremely high airflow rate and a grip-friendly locking sleeve makes it well suited for air cushion inflation and diving applications. Its nickel-plated brass construction makes it a perfect fit for use in damp/wet and corrosive environments. The couplings and nipples are available in a wide range of connections.

Series 341
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: Nickel-plated brass
Material nipple: Nickel-plated brass
Material seal: NBR

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 341
Flow l/min. (CFM)
Couplings Part No. Connection Length Diameter Hexagon
Hose connection 10 341 10321034110326.3 mm (1/4")68.724.419
 10 341 10341034110348.0 mm (5/16")71.224.419
 10 341 100410341100410.0 mm (3/8")71.724.419
Male thread 10 341 1152103411152R 1/4"64.724.420
 10 341 1154103411154R 3/8"62.724.420
 10 341 1155103411155R 1/2"57.225.422
 10 341 14521034114521/4" NPT63.724.420
 10 341 14541034114543/8" NPT61.724.420
 10 341 14551034114551/2" NPT5625.422
Female thread 10 341 1202103411202G 1/4"61.524.420
 10 341 1204103411204G 3/8"61.524.420
 10 341 1205103411205G 1/2"612925
 10 341 14021034114021/4" NPT60.524.420
 10 341 14041034114043/8" NPT60.525.422
 10 341 14051034114051/2" NPT602925


Nipples Part No. Connection Length Diameter Hexagon
Hose connection 10 341 50021034150026.3 mm (1/4")4713-
 10 341 50031034150038.0 mm (5/16")49.514-
Male thread 10 341 5152103415152R 1/4"4616.214
 10 341 5154103415154R 3/8"4619.617
 10 341 5155103415155R 1/2"5225.422
 10 341 54521034154521/4" NPT42.716.214
Female thread 10 341 5202103415202G 1/4"4219.617
 10 341 5204103415204G 3/8"43.223.120
 10 341 5205103415205G 1/2"46.531.227
 10 341 54041034154043/8" NPT4223.120


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.

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