ThePipingMart Blog Metals Weldolet vs Nipolet – What’s the Difference

Weldolet vs Nipolet – What’s the Difference

Weldolet vs Nipolet

Weldolet and Nipolet have commonly used branch connection fittings in the construction industry. These fittings connect pipes that require branching off from the main pipeline and provide a reliable way to do this. Although both fittings are similar in function, they differ in design and certain aspects of their application. This blog post will focus on the main differences between weldolet and nipples and which is best for your project.

Difference Between Weldolet and Nipolet

Design and Application

The weldolet is a weld branch fitting that is used to make a branch connection to a pipe. It is available in numerous sizes and can be made of different materials, such as stainless steel, carbon steel, and alloys. The design of the weldolet makes it ideal for high-pressure piping systems. Also, its strength and durability make it an excellent choice for applications that require long-lasting and reliable branch connections.

On the other hand, the nipple is a socket weld branch connection manufactured up to a specific size range and is generally used for smaller piping applications. Its design and structure make it a perfect fit for piping systems where clean and purified fluids need to flow through with minimum turbulence. Its compact size and smooth finish make it a perfect fit for small designs where space is at a premium.

Installation Process

Weldolets are installed using a welding process. This means that connecting the fitting to the pipe requires welding equipment, and the welding operator must be qualified and certified to perform the welding. Also, the installation process for wallets takes time and requires greater effort than nipples.

In contrast, violets are installed using easy-to-operate socket welding equipment. This process merely involves slipping the socket fitting over the pipe and welding it together, usually requiring less time and effort than its counterpart.


Although the cost can vary depending on the specific application and requirements of your project, in general, nipples are more expensive than wallets. The high cost of nipples can be attributed to the high-grade materials used in their production and the sophisticated manufacturing processes required to create them.

Weldolets, conversely, are manufactured in a more straightforward process and are generally more affordable than nipples. Additionally, the installation process for wallets is more straightforward, and there is no need for specialized machinery or equipment, which can further reduce the overall cost.


In conclusion, weldolet and nipples are excellent branch connection fittings but differ in specific aspects. In general, wallets are best for high-pressure piping systems, and they offer an efficient and reliable way to connect pipes with high strength and durability. On the other hand, nipples are ideal for small piping applications where clean, purified fluids must flow through with minimal turbulence. They are also a better choice when space is at a premium and you need to minimize the overall space used. Ultimately, your choice of either fitting depends on your specific needs and requirements, and you should choose the one that best fits your project.

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