Pneumatic Products, Standard Couplings & Nipples

Series 300, DN 5.5

  • One-hand operated
  • Strong and durable
  • High flow capacity

Series 300 couplings offer high flow and require only a low connection force, which ensures a safe working environment. Male threads on the couplings and nipples feature pre-applied thread sealant. The Series eSafe 300 version is disconnected in two stages in order to vent the coupling and minimize the risk of sudden component separation, which has the potential to cause operator injury. The one-handed operation ensures easy handling. The eSafe version complies with ISO Standard 4414 and EN 983.


Series 300 is available in eSafe, Soft-Line and Multi-Link versions.

Series 300, DN 5.5
Technical data
Nominal flow diameter: 5.5 mm (7/32")
Air flow: 1050 l/min (37.1 CFM)
Max. working pressure: 16 bar (232 PSI)
Min. burst pressure: 140 bar (2030 PSI)
Connection force: 70.7 N
Temperature range: -20°C — +100°C (-4°F — +212°F)
Material coupling: Zinc-plated steel/brass
Material nipple: Hardened zinc-plated steel
Interchangeable with: Rectus 14/22, Prevost ASI06, Hansen 210, Orion 44150/44515.
Standards: ARO 210 Standard, 5.5 mm
Markets: Benelux, North America, Switzerland

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 300, DN 5.5
Flow, l/min. (CFM)
Couplings Part No. Connection
Hose connection 10 300 10021030010026.3 mm (1/4")
 10 300 10031030010038 mm (5/16")
 10 300 100410300100410 mm (3/8")
Male thread 10 300 1152103001152R 1/4"
 10 300 1154103001154R 3/8"
 10 300 1155103001155R 1/2"
 10 300 1452103001452NPT 1/4"
Female thread 10 300 1202103001202G 1/4"
 10 300 1204103001204G 3/8"
 10 300 1402103001402NPT 1/4"
Stream-Line connection 10 300 10601030010606.5x10 mm
 10 300 10621030010628x12 mm
 10 300 106610300106611x16 mm


Nipples Part No. Connection
Hose connection 10 300 50021030050026.3 mm (1/4")
 10 300 50031030050038 mm (5/16")
 10 300 500410300500410 mm (3/8")
Male thread 10 300 5151103005151R 1/8"
 10 300 5152103005152R 1/4"
 10 300 5154103005154R 3/8"
 10 300 5155103005155R 1/2"
 10 300 5451103005451NPT 1/8"
 10 300 5452103005452NPT 1/4"
 10 300 5454103005454NPT 3/8"
Female thread 10 300 5201103005201G 1/8"
 10 300 5202103005202G 1/4"
 10 300 5204103005204G 3/8"
 10 300 5401103005401NPT 1/8"
 10 300 5402103005402NPT 1/4"
 10 300 5404103005404NPT 3/8"
Stream-Line connection 10 300 50581030050585 x 8 mm
 10 300 50601030050606.5 x 10 mm
 10 300 50621030050628 x 12 mm
 10 300 50631030050639.5 x 13.5 mm
 10 300 506610300506611 x 16 mm


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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