| Parameter | Description | Typical Value | Units |
| d | Nominal diameter of the main pipe | 22 | mm |
| Dp | Branch pipe diameter | Typically the same as the main pipe (22mm) | mm |
| r | Radius of the branch pipe | ~11 | mm |
| h | Height of the tee | ~20-25 | mm |
| l | Length of the straight section on either side of the branch pipe | ~15-20 | mm |
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