Reducing Coupling
Useful Information
Technical Specification
- Body material: Nickel plated brass
- Temperature range: -20°C to +80°C
- Maximum pressure: 15 bar
- Connection type: Reducing tube x tube, straight
- Compatible tube materials: PA6, PA12 and polyurethane
- Minimum pressure: -0.99 bar
- Fluids: Compressed air, low pressure compatible fluids and liquids
Description
Engineered for pneumatic systems requiring a reliable reduction between differing tube diameters, this coupling provides a secure straight connection while maintaining consistent flow performance. The nickel plated brass body offers robust corrosion resistance and dependable service life, while the quick fit mechanism ensures efficient installation. Tube assembly is achieved by feeding the tubing through the locking nut and onto the fitting cone before tightening, supporting quick and accurate setup across a wide operating temperature and pressure range.
Key Features & Benefits
- Robust construction: Nickel plated brass design ensures durability and resistance to mechanical wear
- Reduced tube transition: Provides a secure and efficient connection between differing tube sizes
- Reliable sealing: Airtight performance is maintained across pneumatic applications using compatible plastic tubes
- Quick assembly: Push-on connection enables fast installation with minimal tooling
- Wide operating window: Suitable for temperatures from -20°C to +80°C and pressures up to 15 bar
- System compatibility: Performs effectively in conjunction with Kelm pneumatic components and polyurethane tubing

| Product Code | Tube (mm) | Tube (mm) | L (mm) | CH (mm) |
| 370221 | 6/4 | 5/3 | 32.2 | 12 |
| 370223 | 8/6 | 6/4 | 33.5 | 12 |
| 370225 | 10/8 | 8/6 | 36.9 | 14 |
