Guide to Long Weld Neck Flanges

Long Weld Neck Flanges

What Are Long Weld Neck Flanges?

Long weld neck flanges (LWN) are commonly used in piping systems to connect pipes, valves, and pumps. They are circular plates with a raised face on one side and a hub on the other. Long Weld Neck Flanges differ from other types of flanges because they have an extended length on the neck, which provides more stability and strength for higher pressures than regular weld neck flanges provide. This makes them ideal for use in high-pressure applications such as oil refineries or petrochemical plants.

Applications Of Long Weld Neck Flanges

A long weld neck flange is typically used for connecting pipes that transport liquids or gases at high pressures. It is also used in pressure vessels such as boilers or tanks where there is potential danger from volatile chemicals or gasses due to its increased durability over other types of flange connections. Additionally, long weld necks can be used to connect offshore pipelines that need to be securely fastened underwater.

Uses And Advantages Of Long Weld Neck Flanges

Long weld necks reduce stress concentration compared to short-necked flange connections while simultaneously providing excellent sealing capabilities, making them suitable for all kinds of applications with varying pressure requirements, including oil & gas, chemical processing plants, wastewater treatment facilities, pharmaceutical plants, among others. Additionally, these types of connections are easy to install and require minimal maintenance due to their sturdy construction, which results in lower life cycle costs overall. Another advantage is their ability to provide superior corrosion resistance due to the use of stainless steel material during production, which also extends their lifespan significantly longer than traditional welding methods would allow for.

Long-weld neck flanges can be crucial components for many industrial operations since they provide superior sealing capabilities and increased durability over other types of connections available on the market today. Not only do they offer superior corrosion resistance, but they also reduce stress concentration while allowing for easy installation with minimal maintenance required over time, resulting in lower life cycle costs overall compared to traditional welding methods. 

This guide provides a comprehensive overview of long weld necks detailing their advantages and applications so that industry professionals can make informed decisions when it comes time to select the correct type of connection for their specific needs.