1. Copper Elbows:
- Used to change the direction of the pipe run
- Available in various angles: 45°, 90°, and sometimes 60°
- For big sizes, typically 2" and above
- Types include:
- Standard (short radius)
- Long radius
- Threaded (for smaller sizes)
- Socket weld (SW) or butt weld (BW) for larger sizes
2. Copper Tees:
- Used to create branch lines from main runs
- Available in:
- Equal tee (all openings of the same size)
- Reducing tee (one or more openings of different sizes)
- For large sizes, usually 2" and above
- Types include:
- Threaded (for smaller sizes)
- Socket weld (SW)
- Butt weld (BW)
Key considerations for big size copper fittings:
1. Material: Usually made from C12200 (DHP) copper, suitable for high-pressure applications.
2. Pressure ratings: Must comply with ASME B16.28 standards for wrought copper elbow and tee fittings.
3. Wall thickness: Thicker walls are used for larger diameters to maintain strength and pressure capacity.
4. Finishing: Often electro-finished or mechanically polished for smooth interior surfaces.
5. Testing: Subject to hydrostatic testing and/or eddy current testing for quality control.
6. Installation: Requires proper brazing or welding techniques for secure connections.
7. Cost: Generally more expensive than smaller copper fittings due to higher material requirements.
When specifying or purchasing big size copper elbows and tees, it's crucial to consider factors such as system pressure, temperature, fluid type, and installation requirements to ensure proper selection and performance.
