What is a flange valve?

A flange valve is an industrial valve featuring flat, round edges or flanged ends, which allow for bolted connections to the pipe’s matching flanges.

This device has several industrial advantages, including excellent sealing and the capacity to withstand extreme pressures and temperatures.

As a leading manufacturer of flange valves, we can help you better understand this equipment, as we have provided innovative and high-quality valves designed for long-term use in manufacturing.

So, continue reading because this article will go over their standards, basic functionality, and so on.

Valve Flange: What Is The Flange On A Shut-Off Valve?

A flange on a shut-off valve is an industrial component with bolt holes wrapping around flat, circular edges known as flanges that allow you to connect it to pipes. 

To prevent leaks, the valves and matching flanges on the pipe are welded or bolted together, with a gasket or sealing ring between them.

This form of flange valve connection allows the system to safely handle internal pressure and forces while offering other advantages, which will be addressed further later.

Furthermore, some valves include separate flanges that will be cast or welded to its edges rather than being integrated as one piece.

Flange Valve Connection: What Is The Function Of A Flange Valve?

The function of a flange valve is to control the flow of liquids or gases through fully or partially opening and closing the pipeline.

Their reliable materials and gaskets between the flanges ensure a tight and leakproof seal when closed, which allows the system to safely handle internal pressure and forces. 

Furthermore, because the valve and pipe’s flanges tend to be bolted together, they may be easily disassembled for inspection, cleaning, or repair without cutting the pipes.

Therefore, valves with flanges make them suitable for various industries’ production, including:

• oil and gas
• water treatment
• power generation
• chemical processing
• And so on

Some Common Problems for Flange End Valves 

Several studies, including those by Wei Liu and Hehui Wang, have shown that one of the obstacles the industry faces is gasket and seal damage, which can lead to leaks.

Their research also revealed that it can be caused by other difficulties, like corrosion, and that the equipment slowly cracks due to repeated force. 

As a result, you should completely confirm the flange valve’s characteristics to ensure its dependability and ability to manage these problems, such as CLDG!

Our high-quality Forged Integral Flanged End Valve, for example, can address these concerns by providing our clients with a variety of solutions, including:

• Corrosion-resistant materials (e.g., A105N, Duplex grades)
• Integral Flanged End Design to avoid putting stress or force in one spot
• And so on

Flange Type Valve Standards and Specifications

Valve flanges must conform to numerous standards and requirements to ensure their dependability and compatibility with the piping system.

Below are some of the common standards and specifications:

• ASME B16.5: Similar to ASME B16.34, this standard specifies the flange size and pressure rating for pipe flanges and fittings, ranging from 1/2” to 24“.
• ASME B16.34: For valves with flanged, threaded, and welding ends. It addresses aspects like pressure-temperature ratings, materials, sizes, and testing.
• API Standards (e.g., API 6A): Specifically for wellhead and tree equipment flanges in oilfield/high-pressure applications.

Flange Valve: Main Key Takeaways

Flange valves are a critical part of any industrial piping system, including oil and gas.

Their designs ensured leak-free ease of maintenance and durability across different harsh working environments while providing effective flow control. 

At CLDG, our long manufacturing expertise enables us to offer over 1,300 valve specifications to meet the different industrial needs of our clients’ production success.
Contact us for technical specifications, and let’s begin a partnership to improve your operations with dependable flange valve solutions!