Offering a reliable way to connect pipe systems with the various equipment, valves, and other components of virtually any processing system, flanges are the second most used joining method after welding.
Using flanges adds flexibility when maintaining piping systems by allowing for easier disassembly and improved access to system components.
A typical flanged connection is comprised of three parts:
In most cases, there are specific gasket and bolting materials made from the same, or approved materials as the piping components you wish to connect. Stainless Steel flanges are some of the most common. However, flanges are available in a wide range of materials so matching them with your needs is essential.
Other common flange materials include Monel, Inconel, Chrome Moly, and many others depending on the application.
The best option for your needs will depend on both the system in which you intend to use the flange and your specific requirements.
Flanges are not a one-type-fits-all sort of solution. Sizing aside, matching the ideal flange design to your piping system and intended usage will help to ensure reliable operation, a long service life, and optimal pricing.
Here’s a look at the most common flange types available.
Flange design is only the start when considering the ideal flange for your piping system. Face types are another characteristic that will have a major impact on the final performance and service life of your flanges.
Facing types determine both the gaskets needed to install the flange and characteristics related to the seal created.
Common face types include:
Many face types also offer one of two finishes: serrated or smooth.
Choosing between the options is important as they will determine the optimal gasket for a reliable seal.
In general, smooth faces work best with metallic gaskets while serrated faces help to create stronger seals with soft material gaskets.
Apart from the functional design of a flange, flange dimensions are the most likely factor to impact flange choices when designing, maintaining, or updating a piping system.
However, you must consider how the flange interfaces with the pipe and the gaskets in use to ensure proper sizing.
Common considerations include:
Each of the above characteristics will have an influence on how the flange performs across a range of processes and environments.
Goto Haihao Group to know more.
So how can you tell which flanges are up to the task and which are not?
Flanges are often classified based on their ability to withstand temperatures and pressures.
This is designated using a number and either the “#”, “lb”, or “class” suffix. These suffixes are interchangeable but will differ based on the region or vendor.
Common classifications include:
Exact pressure and temperature tolerances will vary by materials used, flange design, and flange size. The only constant is that in all cases, pressure ratings decrease as temperatures rise.
To help make comparison easier, flanges fall under global standards established by the American Society of Mechanical Engineers (ASME) -- ASME B16.5 & B16.47.
If you’re attempting to replace or verify existing parts, all flanges must include markers -- typically on their outer perimeter -- to aid in the process.
These markers also follow a strict order:
This guide offers a solid foundation of the basics of flange design and how to choose the ideal flange for your piping system. However, with a wide range of stainless steel flanges and other flange materials available, it is impossible to list every configuration, detail, or consideration.
Should you have questions, the Technical Sales Experts at Unified Alloys are ready to help. Serving industries and businesses across North America and Canada for more than 40 years, we understand the complexities of alloy piping and the needs of your industry. Call us today for additional information and to find the ideal flange, piping, and components for your next project.
Pipelines keep things moving for many different industries. What happens when pipelines are not able to transfer resources as they should? The breakdown for the transit of many resources would look something like the following: it would take a line of 750 tanker trucks constantly being loaded and moved every 2 minutes, 24/7, to move even the modest amount one pipeline can move.
A big part of keeping those pipelines fully functional and connected as a piping system is pipe flanges. The companies that sell them and offer guidance throughout the entire process will also ensure you get great products at the right price. Below are the top benefits of using pipe flanges.
Chances are you have pipelines in some hard-to-reach areas. You need more flexibility in those locations without the need for adapters. Flanges keep you from using adapters in pipes while providing much-needed flexibility.
Many pipelines deal with tight spaces. Traditional flange fittings are easy to assemble in areas where a wrench does not have clearance. They are simply assembled with moderate torque, making them easier to fit in tight spaces.
A connection using flanges makes maintenance much easier. This is particularly true for rigid lines in continuous pipes and metal tubes. Flanges also afford easy disconnecting, reconnecting, and zero-clearance assembly for better maintenance of manifold, tube, and hose connections.
When compared with standard hydraulic fittings, flange connections and fittings are less prone to loosening. They also decrease the likelihood that other components become loose during demanding hydraulic applications. Instead, they provide a better load distribution by effectively clamping around a flange head.
Pipe connections with vibrations, high pressure, or shock pressures are easily damaged when using traditional hydraulic fittings. Flange connections, on the other hand, are a great option for pipe ends and bends. Pipeline bends subjected to high lateral forces may experience loosening of the assembly without the use of flanges.
Pipe flanges can be very beneficial for the piping industry. If you are in need of any flanges, call Lynco Flange & Fitting today!
The company is the world’s best Pipe Flanges And Fittings supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.