Unions
A Union is used to join two pipes without turning either pipe.
Pipe Unions are made in three parts: a female end, a male end, and a nut. The nut provides the necessary pressure to seal the joint when the male and female ends are brought together. Unions allow dismantling a fitting without disturbing the pipe.
Sizes are Nominal Pipe Size (NPS) - size chart
![Pipe Fittings Unions](https://www.steelsupplylp.com/uploads/category/_800xAUTO_fit_center-center_100_none/Pipe-Fittings-Unions.jpg)