Series 55x compressed air couplings
Series 55x quick couplings are produced in stainless and acid-proof steel 316. Ball cage and valve are made of POM.
- Made of stainless and acid-proof steel 316
- Ball cage and valve are made of POM
- The optimized valve system minimizes turbulence and ensures optimal airflow
- One hand connection and disconnection
All external threaded couplings can be delivered pretreated with teflon.
Find your stainless steel coupling
EURO
Serie 550
Stainless steel 316
Internal thread  | Art. nr. |
| 1/4″ BSP | 550-002000 |
| 1/4″ NPT | 550-032000* |
| 3/8″ BSP | 550-004000 |
| 3/8″ NPT | 550-034000* |
| 1/2″ BSP | 550-005000 |
| 1/2″ NPT | 550-035000* |
External thread  | Art. nr. |
| 1/4″ BSPT | 550-012000 |
| 1/4″ NPT | 550-042000* |
| 3/8″ BSPT | 550-014000 |
| 3/8″ NPT | 550-044000* |
| 1/2″ BSPT | 550-015000 |
| 1/2″ NPT | 550-045000* |
Hose connection  | Art. nr. |
| 1/4″ (6 mm) | 550-022000 |
| 5/16″ (8 mm) | 550-023000 |
| 3/8″ (10 mm) | 550-024000 |
| 1/2″ (13 mm) | 550-025000 |
Standard: EURO
Flow diameter: 7.8 mm
Data
| Working pressure | 35 bar |
| Burst pressure | 150 bar |
| Temperature range | -20 oC to +60 oC |
| Flow diameter | 7.8 mm |
Materials
| Housing | Stainless steel 316 |
| Ball cage | POM |
| Valve | POM |
| Retaining ring | Stainless and acid resistant steel 316 |
| Balls | Stainless and acid resistant steel 316 |
| Seals | Nitrile rubber |
| Springs | Stainless steel spring wire |
Nipples with EURO profile
Internal thread  | Hardened steel | Stainless steel 316 |
| 1/4″ BSP | 520302 | 540302 |
| 1/4″ NPT | 520332 | 540332* |
| 3/8″ BSP | 520304 | 540304 |
| 3/8″ NPT | 520334 | 540334* |
| 1/2″ BSP | 520305 | 540305 |
| 1/2″ NPT | 520335 | 540335* |
Eksternal thread  | Hardened steel | Stainless steel 316 |
| 1/4″ BSPT | 520312 | 540312 |
| 1/4″ NPT | 520342 | 540342* |
| 3/8″ BSPT | 520314 | 540314 |
| 3/8″ NPT | 520344 | 540344* |
| 1/2″ BSPT | 520315 | 540315 |
| 1/2″ NPT | 520345 | 540345* |
Hose connection  | Hardened steel | Stainless steel 316 |
| 1/4″ (6 mm) | 520322 | 540322 |
| 5/16″ (8 mm) | 520323 | 540323 |
| 3/8″ (10 mm) | 520324 | 540324 |
| 1/2″ (13 mm) | 520325 | 540325 |
PUR Connection  | Hardened steel |
| ø5/ø8 mm | 520352 |
| ø6.5/ø10 mm | 520354 |
| ø8/ø12 mm | 520355 |
| ø9.5/ø13.5 mm | 520356 |
25 years warranty
It does matter which blow gun you choose.
We provide a 25-year warranty on the valve system in all Air Boy® blow guns. They are tested to 28 million activations and it is still completely airtight.
Choose an Air Boy® blow gun. It is your guarantee of quality and reliable tools you can use day after day.
