Blog

Different Types of Flange – How Each Type is Different and Why You Need to Know These

This article will discuss different types of flanges, such as Slip-on, Figure 8, ASTM A516 Gr 70, and Lap joint flanges. Learn how each type is different and why you might need to know them. To find the right type for your application, you should be able to easily identify its basic characteristics and use it to your advantage. The different types of flanges are listed below. You can also find useful tips for choosing them.

Lap Joint Flange

Lap Joint flanges are a popular choice for piping systems and can be used with a variety of materials. These flanges often have several names, including Back-Up Flanges, Loose Ring Flanges, and Van Stone Flanges. These flanges are designed to float on the pipe and allow easy bolting. They are most often used with mixed-media piping systems, or on a liner that is insulated from corrosion. Lap joint flanges are typically made of different materials than stub ends, which can cause galvanic corrosion.

A common application of lap joint flanges is to repair piping with misaligned bolt holes. Because they are designed for frequent disassembly, they can be made of a lower grade of material. The only downside of this design is that the flange needs to match the pipe material. Lap joint flanges can save money by allowing you to use a lower grade of pipe.

A lap joint flange is a two-piece fitting that has flat faces and a flared end. The flange has a diameter that is equal to the diameter of the stub end, which acts as a raised face. There are several ways to face the stub end, including ring joint, large female, and tongue-and-groove. The face of the flange must be at least twice as thick as the nominal wall thickness of the pipe.

Lap joint flanges are available in a variety of materials and can meet the specifications of ASME B16.5. They are almost identical to Slip-On flanges but have a larger radius at the intersection of the flange face and bore. The flanged portion of the Stub End is accommodated.

Slip-on Flange

A slip-on flange is a type of pipe flange that is meant to slide over the pipe it is installed on. Slip-on flanges are manufactured with an inside diameter that is larger than the pipe’s outer diameter. The pipe is then connected to the flange through a fillet weld on the flange’s top and bottom surfaces. Most slip-on has raised faces to allow the pipe to be screwed onto the flange. For pressure classes, less than 400 pounds, this height is usually raised to 1/16″.

Slip-on flanges are most commonly used in lower pressure assemblies and are less common for higher stress services. Their base is reinforced with a tapered hub for better alignment. These flanges are less expensive than weld neck flanges, but they also have lower initial costs. However, their final installation costs are the same. Therefore, it is best to compare both types of flanges to make sure you are making the right choice for your application.

If you need a high-quality, durable flange for your project, you can choose a standard slip-on flange made of stainless steel. Slip-on flanges are available in all steel grades, including carbon, stainless steel, and alloy. As well, Coastal Flange has a variety of different slip-on flanges in stock. You can choose one of these types based on the material and pressure requirements of the job at hand.

A Slip-On flange has an inside weld that extends from the flange to the pipe and is butt-welded to the piping. The inside weld is recessed from the pipe wall thickness by 3/16 inches. A Slip-On flange with two welds needs a thorough inspection before it can be used. Generally, a slip-on flange should not be used for higher pressure applications, butt-welded connections may be used.

Threaded Flange

Threaded flanges are typically used for smaller systems, such as water piping. They are also suitable for low-pressure and low-temperature environments. Threaded flanges typically come in sizes from 1/2 inch to 2 inches. They are not suitable for high pressure or temperature applications, as the thread geometry can cause leaks. In general, the size of the threaded flanges depends on the system’s pressure and temperature.

This type of flange is generally non-cyclic and has a low risk of welding. It can also be used in explosive or hazardous areas. These flanges can be attached to the pipe without welding. They are used when smaller diameters are required for high-pressure applications. A wide variety of threaded flanges are available, ranging from 1/2 inch in diameter to 24 inches in diameter, depending on the type of pipe and its intended use.

Another advantage of threaded flanges is their low-profile design. This allows for assembly without the use of welding machines. This is especially helpful in areas where the pipe’s wall thickness is too thin to accommodate a weld. Moreover, threaded flanges are also easier to assemble than welded ones. So, if you are considering purchasing a new flange, be sure to look at the pros and cons of each type.

A threaded flange has an inner bore that is threaded. The flange can either be a plate or a hub with a longer thread. When used in conjunction with a pipe, a threaded flange will be the most convenient for maintenance and installation. The flange should have the same thread specification as the pipe’s thread. If you use threaded flanges, it is much easier to install a threaded pipe than a welded joint.

Figure 8 Flange

A figure 8 flange, also known as a spectacle blind flange, is used in piping systems. It consists of two discs of metal that have the same inside diameter. The discs are joined by a narrow steel band and the outer diameter is the same as the flange. The blind flange is an efficient way to connect piping systems and is less costly than insulation valves. Its name derives from the figure 8 shape of its disks.

Another name for a figure 8 flange is the Spectacle Blind Flange. It is a pressure-retaining plate with an open end that is connected to a web or tie bar. It is an ideal flange for small diameter piping applications. These flanges can withstand high pressure and atmospheric temperatures. They are also suitable for hazardous applications. This article will introduce you to the basics of the figure-eight flange and how it is used in piping systems.

Expander Flange

An expander flange is used for connecting piping systems and is a crucial component in the construction of pipelines. It is used in a variety of applications, including oil and gas pipelines, chemical processing plants, power plants, paper & pulp, and food processing industries. These flanges are typically marked with their name, size, and material grade. They can also be customized, depending on the customer’s specifications.

One type of expander flange is the welding neck flange. These flanges feature large non-flanged ends and are used in various engineering applications. Expander flanges are typically used for increasing the line size instead of installing a separate reducer & flange combination. In addition to expanding piping systems, they can also be used to connect pipes to pumps. While these types of expander flanges can be expensive to purchase, they are incredibly durable.

Reducer flanges are another common type of expanding flange. They can be used to increase a pipeline bore without causing too much damage to the pipe. Buttweld reducers are more appropriate for larger size changes, such as for reducing a pipe size by more than two sizes. Buttweld reducers are not generally available off-the-shelf. So, a quality supplier will be able to provide the right expander flange for your application.

The key differences between a slip-on and weld-neck flange are their size, material, and quality. Slip-on flanges are typically less expensive than their weld-neck counterparts and are a popular option among many users. Because they fit over the pipe, they have a larger inside diameter. The inside diameter of a slip-on flange is slightly larger than the outside diameter of the pipe, and a fillet weld attaches them to the pipe.