Threaded Flanges: Advantages and Common Uses

When it comes to piping systems, choosing the right type of flange can make all the difference. Ever wondered how to connect pipes without needing to weld? That’s where threaded flanges come in. While plate flanges are a popular option, threaded flanges have their own unique perks. If you’re looking for an easy-to-install, no-weld solution, threaded flanges might just be what you need.

In this article, we’ll break down the benefits of threaded flanges, their common uses, and how they stack up against other flange types. Let’s get into it!

What Are Threaded Flanges?

What are threaded flanges? Threaded flanges are a type of flange that comes with an internal thread. This thread allows you to screw the flange directly onto a pipe without the need for welding. 

They’re especially handy when welding isn’t feasible or safe, like in flammable or high-pressure environments. You often see threaded flanges in systems that require easy assembly and disassembly, or where you want a connection without the hassle of welding.

Compared to plate flanges, which typically need to be welded or bolted, threaded flanges provide a quick and straightforward option for securing pipes.

Key Advantages of Threaded Flanges

No Welding, No Problem

Welding can be a time-consuming and costly process. It can also introduce risks in certain environments, such as those with flammable or explosive substances. With threaded flanges, you don’t need to worry about the risks and logistics of welding. Simply screw them onto the pipe, and you’re ready to go! The ability to install without heat exposure makes threaded flanges perfect for environments where safety is a concern.

Practical Example:

In maintenance-heavy facilities like water treatment plants, having quick and simple assembly/disassembly is crucial. Threaded flanges allow technicians to add or remove connections safely and efficiently, without specialized welding tools.

Easily Adjustable and Reusable

Threaded flanges provide a high level of adjustability. Because they can be unscrewed and reattached as needed, they are highly practical for systems that may need to change or adapt over time. Whether you’re modifying the layout or replacing a section of piping, threaded flanges offer flexibility without compromising the integrity of the connection.

Practical Example:

In HVAC systems (heating, ventilation, and air conditioning), threaded flanges are used for connecting pipes carrying air or liquid. If the layout of the system changes, these flanges allow easy disconnection and reconnection without the need for cutting or welding new sections.

Great for Low-Pressure and Low-Temperature Systems

While threaded flanges are not suitable for high-pressure environments, they excel in low-pressure and low-temperature applications. This makes them great for residential and light commercial systems where the piping doesn’t experience extreme conditions. The threads provide a secure connection that can easily be tightened for a leak-resistant seal.

Practical Example:

In irrigation systems for agriculture, threaded flanges are frequently used to connect low-pressure water supply lines. They offer a reliable seal that is more than adequate for the pressure requirements and can be adjusted easily for seasonal changes or expansion.

Reduced Cost and Maintenance

Since threaded flanges don’t require welding, they help save on installation costs. Additionally, if the flange or pipe needs to be replaced, it’s simply a matter of unscrewing the flange, rather than cutting and re-welding it. This makes repairs and adjustments less expensive and time-consuming in the long run.

Practical Example:

In manufacturing facilities, maintenance is a critical aspect of keeping operations running smoothly. With threaded flanges, there is minimal downtime when repairs or replacements are needed, which helps reduce operational costs.

Common Uses of Threaded Flanges

Threaded flanges find their way into a range of applications where easy installation, low-pressure tolerance, and frequent adjustments are needed. Here’s where you are likely to see them in action:

Water Treatment and Supply Systems

In water treatment plants, threaded flanges are used for low-pressure connections that require secure, yet easily modifiable joints. Whether it’s freshwater or waste treatment, these flanges allow easy maintenance of piping systems without significant downtime.

Compressed Air Systems

For applications like compressed air distribution, threaded flanges are an ideal choice. These systems generally operate at a lower pressure, making threaded connections practical. The ability to unscrew and reseal the connections also ensures quick fixes to any leaks or system adjustments.

Fire Protection and Sprinkler Systems

Fire suppression systems often use threaded flanges for their piping. Since these systems are low-pressure and sometimes require quick assembly, threaded flanges are the preferred choice. They also allow for swift and safe disassembly during inspections or when replacing outdated components.

Non-Hazardous Gas Piping

In situations where low-pressure gas (like natural gas or propane) is transported, threaded flanges are a safe and practical option. Since there is no welding involved, there’s less risk when dealing with combustible gases, making them suitable for residential or light commercial gas supply systems.

Irrigation and Agricultural Systems

Threaded flanges are widely used in agricultural settings, particularly for irrigation systems. They allow farmers to quickly extend or modify their irrigation networks based on crop layout changes or seasonal needs.

Flanged vs. Threaded: What’s the Difference?

Understanding how threaded flanges compare to traditional flanged connections (like plate flanges) is important when choosing the right connection for your system. Here’s a quick comparison:

Find Reliable Threaded Flanges at Long’an Flange

If you’re looking for reliable, high-quality threaded flanges for your piping system, Long’an Flange is here to help. 

With over 13 years of experience and a focus on quality, we manufacture flanges that meet your needs for low-pressure and easily adjustable piping systems. Explore our threaded flange selection to find the perfect fit for your project or contact us today!

FAQ Section

Where are threaded flanges used?
Threaded flanges are used in systems where welding is not possible or safe, such as low-pressure piping, temporary systems, and hazardous environments where heat could pose a risk.

Are threaded flanges suitable for high-pressure systems?
No, threaded flanges are not suitable for high-pressure applications. They are best used for low-pressure and low-temperature systems.

How do threaded flanges compare to welded connections?
Threaded flanges screw onto pipes without welding, making them easy to install and adjust. Welded connections are more permanent and suitable for higher pressures.

Can threaded flanges be reused?
Yes, threaded flanges can be easily unscrewed, adjusted, and reused, making them practical for systems requiring frequent changes or maintenance.

Resources:

What Threaded Flanges Are and How Are They Used

5 Key benefits of Flanges

What are Threaded Flanges and Their Applications?