Threaded tees are mainly used to either combine or split a fluid flow. It is a type of pipe fitting which is T-shaped having two outlets, at 90° to the connection to the main line. It is a short piece of pipe with a lateral outlet. A tee is used for connecting pipes of different diameters or for changing the direction of pipe runs. They are made of various materials and available in various sizes and finishes. They are extensively used in pipeline networks to transport two-phase fluid mixtures.
- Threaded piping is commonly used in low-cost, noncritical applications such as domestic water, fire protection, and industrial cooling water systems.
- Threaded tees are normally made of cast gray or malleable iron, cast brass or bronze, or forged alloy and carbon steel.
Dimensions Threaded Tee – ASME B16.11
Dimensions – NPS 1/2 to 4 – Class 2000
| NPS | Min Length of Thread | Outside Dia of Band D | Center to End A | Min WT | |
| B | J | ||||
| 1/2 | 10.9 | 13.6 | 33 | 28 | 3.18 |
| 3/4 | 12.7 | 13.9 | 38 | 33 | 3.18 |
| 1 | 14.7 | 17.3 | 46 | 38 | 3.68 |
| 1¼ | 17 | 18 | 56 | 44 | 3.89 |
| 1½ | 17.8 | 18.4 | 62 | 51 | 4.01 |
| 2 | 19 | 19.2 | 75 | 60 | 4.27 |
| 2½ | 23.6 | 28.9 | 92 | 76 | 5.61 |
| 3 | 25.9 | 30.5 | 109 | 86 | 5.99 |
| 4 | 27.7 | 33 | 146 | 106 | 6.55 |
| NPS | B | J | Outside Dia of Band D | Center to End A | Min WT |
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