What is the key characteristic of a Slip On (S.O.) flange?

A Slip On (S.O.) flange is characterized by its design, which allows the flange to slide over the end of a pipe. This feature provides ease of installation, as the flange can be easily positioned onto the pipe and then aligned for welding. Once in place, it is typically welded both inside and outside to create a strong and secure connection. This design makes Slip On flanges a popular choice for many piping applications, where they can be used in situations requiring straightforward assembly and maintenance.

In addition, because of this sliding capability, these flanges can accommodate minor misalignments, making them versatile and easy to work with in various installations.