Brass Fittings
Brass Compression Reducing Coupling
Reducing compression coupling for joining two copper tube sizes with nut and olive compression sealing.
| Material | CW617N / forged brass |
| Finish | Natural or nickel-plated brass |
| Connection | Flare, compression or threaded |
| Packaging | Bag or carton by size |
| Use | Copper tube service connections |
| Fitting type | Brass Compression Reducing Coupling |
| Size range | Common 1/4" to 3/4" flare or 8 mm to 76 mm compression sizes |
Dimensional Data
Technical Specifications
| Nominal Size | OD (in) | Wall Thickness (in) | Weight (lb/ft) | Max Pressure (psi) |
|---|---|---|---|---|
| 10 x 8 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
| 12 x 10 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
| 15 x 12 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
| 18 x 15 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
| 22 x 15 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
| 28 x 22 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
| 35 x 28 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
| 42 x 35 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
| 54 x 42 mm | Compression x compression | Reducing connection | PN20/PN25 range | CW617N brass |
* Values are nominal and subject to manufacturing tolerances. Consult GCM technical support for specific temperature or pressure applications.
Where It’s Used
Key Applications
Brass Compression Reducing Coupling for copper tube connection, service repair and HVAC/refrigeration installations. Size rows include tube size, connection format, pressure/service note and material.
Refrigeration service fittings
Split AC and VRF connections
Copper water pipe connections
Mechanical service repairs
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