Sweat End Copper Reducing Coupling – HVAC Refrigeration Piping,C12200 copper, ASME B16.22 compliant. Sweat-end design connects different diameter tubes securely. Sizes 1/4″ to 4-1/8″ OD. Leak-proof, corrosion resistant.
Our Copper Reducing Coupling is a precision-engineered sweat-end fitting designed to connect copper tubes of different diameters in a straight line for air conditioning, refrigeration, and heat pump systems. Manufactured from high-purity C12200 phosphorus-deoxidized copper, it provides a secure, leak-proof transition between unequal pipe sizes within refrigerant circuits.
The coupling features a sweat-end (solder cup) design with a rolled tube stop, ensuring proper insertion depth and consistent capillary action during brazing. Its seamless, one-piece construction eliminates weld seams, reducing potential leak points in high-pressure refrigerant applications.
| Parameter | Details |
|---|---|
| Material | C12200 Phosphorus-Deoxidized Copper |
| Standard | ASME B16.22 |
| Type | Reducing Coupling (C x C, Sweat End) |
| Size Range (OD) | 1/4″ – 4-1/8″ (6.35mm – 105mm) |
| Reducing Combinations | 3/8″×1/4″, 1/2″×3/8″, 5/8″×1/2″, 7/8″×5/8″, etc. |
| Wall Thickness | 0.8mm – 3.0mm (size dependent) |
| Working Pressure | Up to 4.0MPa |
| Operating Temperature | -40°C to +150°C |
| Surface | Smooth, burr-free, degreased |
| Certification | ASME B16.22 |
Seamless One-Piece Construction – No weld seams, eliminating potential leak paths in refrigerant circuits and ensuring structural integrity under pressure
Rolled Tube Stop – Provides correct insertion depth during brazing, preventing over-insertion and ensuring consistent joint quality
Precision Sweat End Fit – Deep solder cups create proper capillary action for strong, reliable joints that withstand vibration and thermal cycling
High-Purity C12200 Copper – Excellent thermal conductivity and corrosion resistance, suitable for long-term refrigerant exposure
Degreased & Clean – No contaminants that could block capillary tubes or valves in refrigeration systems
Full Reducing Size Range – Available from 3/8″×1/4″ to 4-1/8″×2-5/8″ to match all common ACR tube combinations
Connecting copper tubes of different diameters in split AC and central HVAC refrigerant lines
Refrigeration system piping for cold storage, display cases, and chillers
Heat pump and VRF/VRV system installations
Repair and modification of existing ACR piping where diameter transitions are required
CO2 refrigeration systems (degreased version)
Size – 1/4″ to 4-1/8″ OD, various reducing combinations available
Material – C12200 standard; other copper grades available on request
Surface – Degreased for oxygen/CO2 service (optional)
Packaging – Individual bag, bulk carton, or custom labeled packaging
Lead Time – 7–25 days for standard sizes
MOQ – Flexible, contact us for details
Samples – Available upon request
For technical datasheets, samples, or bulk pricing, contact us directly.
