If your company purchases one or more flange packs, it does so out of convenience. These are a gasket and flange combination. When looking into purchasing a flange pack, it is possible to select from a number of options. When it comes to the actual flanges, some types of flanges are more popular than others are.
Common Types
The industry offers several types of flanges as a component in flange packs. Among the most commonly available for industrial use are:
- Weld-neck: These, the most common types in current usage, have a tapered hub. They work best in both high pressure and high/low-temperature applications. They are suitable for both pipes and fittings
- Slip-on: As the name indicates this type of flange slips over the pipe before being welded both internally and externally using two fillet welds to improve its strength and prevent any leakage. This type is less expensive than weld-neck flanges but is also less durable. They are also applicable only for pipes – not fittings
- Lap-joint: This type of flat faced flange also slips over the pipe. However, it does not receive a weld but retains its position through the pressure transmitted by its gasket. This type of flange pack is popular with many in the oil and gas industry
- Threaded: This is a specialty flange for pipes with a very thick wall. Since engineers can screw it on, it does not require welding
- Blind. These boreless flanges blank off the terminal points of pipes as well as those of valves. Without a central hole, they are also easy to install and success. They are more expensive than other types of flanges and are highly durable against impressive levels of mechanical stress
Flange Pack
A flange pack contains a number of flanges with a gasket. They are available in different sizes and materials. Their diversity ensures they can address the needs of a variety of industrial piping and fitting applications.
