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Vendors > CEJN > CEJN / Series 344

35 bar (508 PSI) - 1950 l/min (69 CFM)


Part Name Manufacturer Photograph
CEJN / Series 344 CEJN CEJN / Series 344
Coupling Category
Quick Connect Couplings for Breathing Air Applications
Series 344 is specially designed for applications with low-weight requirements. The shorter design of the coupling gives it a significantly lower weight than other couplings with the same performance. Series 344 is recommended primarily for breathing air firefighting applications, but is also well suited for diving equipment. Its specially designed valve provides an extremely high rate of airflow. Like most other CEJN breathing air couplings, this series offers onehand-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): 1950 l/min (69 CFM)
Max. working pressure: 35 bar (508 PSI)
Min. burst pressure: 140 bar ( 030 PSI)
Temperature range: -30C to +100C (-22F to +212F)
Nominal flow diameter: 7.4 mm (9/32")

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 *special 10 344 1002 6.3 mm (1/4") 64.3 24.4 19
10 344 1004 10.0 mm (3/8") 67.3 24.4 19
10 344 1003 7.0 mm 67.8 24.4 20
Male Thread 10 344 1152 R 1/4" 60.3 24.4 20
10 344 1154 R 3/8" 58.3 24.4 20
10 344 1155 R 1/2" 52.8 25.4 22
10 344 1288 G 1/4" 55.8 24.4 20
10 344 1294 G 3/8" 53.8 24.4 20
10 344 1452 NPT 1/4" 59.3 24.4 20
10 344 1454 NPT 3/8" 57.3 24.4 20
Female Thread 10 344 1220 G 1/4" 54.3 24.4 20
10 344 1204 G 3/8" 57.3 24.4 20
10 344 1402 NPT 1/4" 56.3 24.4 20
10 344 1404 NPT 3/8" 56.3 25.4 22


Nipples Part No. Description Length Diameter Spanner Size
Hose connection (stainless steel) 10 344 5020 6.3 mm (1/4") 44.0 13.0 -
Hose connection (stainless steel) 10 344 5004 10.0 mm (3/8") 45.5 14.0 -
Hose connection (*special -stainless steel) 10 344 5022 7.0 mm 46.0 13.0 -
Hose connection *special 10 344 5023 7.0 mm 46.0 13.0 -
Male Thread 10 344 5252 G 1/4" 38.0 19.6 17
10 344 5254 G 3/8" 36.5 21.9 19
10 344 5452 NPT 1/4" 38.5 19.6 17
Female Thread 10 344 5202 G 1/4" 36.5 19.6 17
10 344 5204 G 3/8" 38.5 23.1 20
10 344 5402 NPT 1/4" 35.5 19.6 17
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