1.       compatible with existing hot tapping / plugging equipment

2.       can be utilized for hot tapping or line stopping

3.       split tee fittings eliminate alignment problems

4.       there is no potential for weld to penetrate the tapping area

5.       allows for maximum hot tap size

6.       size on size fittings normally are available off-the shelf

7.       full range of reducing branch sizes avilable

8.       greater will thickness

9.       higher allowable stresses

10.   more reinforcement area

11.   special fittings are available for any size, flange rating,temperature,pressure,process,or material