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Vendors > CEJN > CEJN / Series 345

35 bar (508 PSI) - 1100 l/min (39 CFM)


Part Name Manufacturer Photograph
CEJN / Series 345 CEJN CEJN / Series 345
Coupling Category
Quick Connect Couplings for Breathing Air Applications
Series 345 is a double shut-off series with both a valved coupling and nipple. The specially designed valve provides an extremely high rate of airflow. This series is well-suited for breathing air diving applications and for applications that demand a closed system when disconnected, such as surface air diving. Like most other CEJN breathing aircouplings, Series 345 offers one-hand-operated connection, an integrated safety feature that guards against unintentional disconnection, a grip-friendly locking sleeve, and a broad connection range.

Technical Data
Material: Nickel-plated brass
Seal material: NBR
Air flow at inlet pressure of 6 bar (87 PSI) and pressure drop 0.5 bar (7 PSI): 1100 l/min (39 CFM)
Max. working pressure: 35 bar (508 PSI)
Min. burst pressure: 140 bar (2030 PSI)
Temperature range: -30C to +100C (-22F to +212F)
Nominal flow diameter: 6.2 mm (1/4")

Couplings: Compatible with Series, 341, 342, and 346 nipples
Nipples: Not compatible with other Series for breathing air applications


Couplings Part No. Description Length Diameter Spanner Size
Hose connection 10 345 1003 8.0 mm (5/16") 71.2 24.4 19
10 345 1004 10.0 mm (3/8") 71.7 24.4 19
Male Thread 10 345 1152 R 1/4" 64.7 24.4 20
10 345 1154 R 3/8" 62 .7 24.4 20
10 345 1254 G 3/8" 58.2 24.4 20
10 345 1454 NPT 3/8" 61.7 24.4 20
Female Thread 10 345 1202 G 1/4" 58.7 24.4 20
10 345 1204 G 3/8" 61.7 24.4 20
10 345 1402 NPT 1/4" 60.7 24.4 20
10 345 1404 NPT 3/8" 60.7 25.4 22


Nipples Part No. Description Length Diameter Spanner Size
Hose connection 10 345 6002 6.3 mm (1/4") 85.0 23.1 20
Male Thread 10 345 6152 R 1/4" 65.4 23.1 20
10 345 6154 R 3/8" 54.4 23.1 20
10 345 6252 G 1/4" 73.7 24.3 21
10 345 6254 G 3/8" 62.0 23.1 20
10 345 6454 NPT 3/8" 53.4 23.1 20
Female Thread 10 345 6202 G 1/4" 55.7 23.1 20
10 345 6204 G 3/8" 58.1 23.1 20
10 345 6402 NPT 1/4" 55.7 23.1 20
10 345 6404 NPT 3/8" 57.1 23.1 20
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