What is a Slip-on flange primarily used for?

• A. High pressure systems of 4 inches and smaller.
• B. General purpose applications without specific pressure ratings.
• C. They are generally used in 150 and 300 applications.
• D. Quick connections requiring no welding.

Answer: (C)

A Slip-on flange is primarily designed for applications that do not require extremely high strength or pressure ratings, making it suitable for general purposes but more specifically for use in low- to moderate-pressure systems. The choice highlighting that they are typically used in 150 and 300 pressure applications correctly captures the practical use cases for Slip-on flanges.

These flanges are easy to install and can accommodate a range of fittings, making them versatile. They can handle moderate levels of pressure, and the ratings of 150 and 300 indicate their compatibility with certain types of piping systems frequently encountered in industrial applications. Their design allows for alignment with the pipe, with the flange slipped over the pipe end before being welded, which adds both stability and a solid connection.

While Slip-on flanges can be utilized in various applications, referencing pressure ratings like 150 and 300 helps to provide a clearer understanding of their limitations. Other choices may imply applications that are either too broad or suggest higher pressures that exceed the appropriate use scenarios for Slip-on flanges, which can lead to potential failures or inefficiencies in unsafe situations.