Neck flanges are parts designed and manufactured to integrate piping systems. These components are designed to transfer tension to the piping, thereby reducing excess pressure at the base of the flange itself.

The neck flange is one of the most efficient piping components on the market. To function properly, it requires a welded circle at the neck. This is crucial because it facilitates X-ray weld inspection.

The necked flange has some very interesting features:

• Withstands frequent pressure and stress from pipes;
• Reduces the occurrence of erosion and shock forces in pipes;
• It is suitable for integrating pipelines that work with any pressure volume and temperature variation.

There are some types of finish that are common in flanges, which comply with specific standards such as ASME/ANSI 16.5, which refers to pressure volume:

• Groove finish called stok finish or standard;
• Spiral groove or spiral serrated finish;
• Smooth finish groove finish;
• Concentric groove finishing or concentric groove.

How to check the quality of the necked flange?

A necked flange must be strong, irreversible, and highly reinforced. Because it's used to withstand pressure in pipelines, flanges are made from industrial steel and, therefore, cannot be subjected to excessive force within the pipelines, nor can they distort the steel.

The flange is easy to insulate and can be used appropriately in systems where pressure varies and is intense, sustains high and low temperatures or internal temperature variation/fluctuation.

Neck flanges can also be used in systems that transport explosive substances and flammable products. Neck flanges are essential in a variety of pipelines and, in the current market, offer excellent cost-benefit.

What do necked flanges look like?

Neck flange manufacturers, who employ quality in their production processes, produce parts with striking structures. These flanges feature:

• Robustness;
• Durability;
• Corrosion resistance;
• Resistance to temperature variation;
• Resistance to pressure intensity.

Flanges are produced by joining steel alloys, carbon steel, and steel at varying temperatures, offering excellent performance and design. Under these conditions, it is possible to produce neck flanges ideal for customer demand, fully meeting their needs and adapting to the piping requirements.

Unival Neck Flanges

Unival Valves and Connections offers the best neck flange options on the market. The company stands out for its production capacity and the quality employed in its production process.

Due to its strong performance and the partnerships it has built with customers, Unival is considered one of Brazil's leading flange suppliers. Since 1986, Unival has worked with commitment and technological innovation to provide connections, flanges, valves, and other industrial accessories to companies in various sectors, including metallurgy, steel, chemicals, oil, food, and many others.

Contact Unival to learn more about necked flanges!