Pipe Expansion JointsAD Muller2020-10-19T06:32:12+00:00

Piping Expansion Joints

To begin with there are three main types of pipe expansion joints metalrubber, and fabric. They are also known as industrial expansion joints. In addition to, bellows joint is installed in a pipe system for a couple of reasons. Firstly expansion joints can absorb vibrations and shock. Secondly, you should use bellow joints to relieve anchor stress, reduce noise, and compensate for misalignment. Additionally, certain expansion joints are designed for thermal expansion in very hot applications. Next expansion joints are necessary in systems that convey high temperature. Substances such as steam or exhaust gases, causes movement and vibration.

Piping expansion joints are made of metal, fabric, or an elastomer (rubber). Furthermore, depending on your application, you will determine if you need a metallic expansion joint, rubber expansion joint, or a fabric expansion joint.

Pipe expansion joints are also designed for other criteria, such as noise absorption, anti vibration, earthquake movement, and building settlement. Expansion joints are also known as “compensators”, as they compensate for the thermal movement. Compensators are also known as metallic expansion bellows, or non metallic expansion bellows.

Bellows, Cover, Liners, End Fittings, Limit Rods

To begin with, industrial expansion joints consist of different components, bellows, liners, cover, end fittings, and limit rods. Formerly people often confuse an expansion joint with a bellow. Also they think the names can be used as one in the same, this is not true. Furthermore, an expansion joint consists of all the components. However, a bellow is just one of the components of the expansion joint. For example, the bellow is the body of the expansion joint. Bellows can have convolutions. Also bellows can be made out of different materials. They are the flexible unit on the metallic expansion joint. In addition to bellows are liners.

Liners protect the inside of the piping expansion joint from erosion. When high flow of air, fluids, steam flows across the inside of a bellow, it can cause it to not work. In fact liners can prevent this problem. Also liners can reduce turbulence. Furthermore, outside covers are used to protect the bellow from being damaged. In addition to, they can insulate the bellow.

Also piping expansion joints can use flanges or butt-weld ends. Moreover, limits rods are used in an expansion joint design to limit the axial compression or expansion. Furthermore, limit rods allow the piping joints to move over a range. In addition, nut stops are placed along the rods. Also limit rods are used to prevent bellows over-extension while restraining the full pressure thrust of the system.

When to Use an Expansion Joint

Some applications lend themselves to either a metal hose or to a pipe expansion joint, but more often than not, there’s a preferred option. a couple of key application criteria allow us to know when to use an expansion joint for piping rather than a hose. These criteria are listed below, except for further reading, please see this engineering bulletin.

  • Axial Movement
  • Vibration Damping
  • Exotic Material Requirements
  • Space Limitations
  • Size Requirements

Sometimes the solution might not be so clear, and instead of deciding between an expansion joint and hose, the perfect solution could also be a mixture of a metal hose and a metal bellows expansion joint. Contact Dannenbaum LLC for more information.

Industrial Expansion Joints for Pipes

In this paragraph, I’m going to discuss why Industrial expansion joints are used for pipes. Firstly, misalignment happens in a pipe system. Secondly thermal expansion happens in a pipe system. Therefore, when the pipe heats and cools it can expand and contract. Pipe bellow joints are also known as compensators, because they compensate for the thermal movement. In addition, there are different types of names for expansion joints for pipe, for example, pipe bellows, and bellow pump connectors.

Expansion Joints for Steam

Steam can be very hot. Thus causes a lot of movement in pipe. Therefore, you will need an expansion joint for steam. Be sure you pick the right expansion joint. Moreover, when asking for a RFQ it helps to have the following information. Firstly you need size. Secondly you need temperature. Next you will need the application. Then you need to know the material. Lastly you’ll need to know the pressure.

Know More About Them

From engine exhaust pipe expansion joints to external pressurized balanced joints and pump connectors, they are as varied as the uses they have.

What are pipe expansion joints?

Pipe expansion joints are pieces of equipment that are used in a variety of systems. Also they are constructed out of three main materials. Metal, rubber, and fabric are used to manufacture expansion joints, and each pipe expansion joint use will determine what material is utilized in manufacturing that particular pipe expansion joint.

What are they used for?

Pipe expansion joints have unique and important functions. Furthermore, a couple of types of them are used to reduced vibration and shock on systems. They are also used to reduce noise, relieve stress, and in some cases, compensate for thermal expansion. When the system involved conveys high temperate substances, such as steam or exhaust gases, industrial expansion joints are necessary for the system to operate properly and mitigate any damage or malfunctioning of the piping structure. Other uses for expansion joints may be for anti-vibration, earthquake movement, and building settlement.

How do they work?

Pipe expansion joints are compensators and are manufactured to hold parts together. Also they safely absorb possible high-temperature-induced expansion, and contraction of building materials. They may also be used to make movement safe for the structure. For example, a pipeline when the seismic activity or ground movement occurs.

What are they made of?

Pipe expansion joints contain a variety of parts, such as bellows, cover, liners, end fittings, and limit rods. All of these parts make up a quality industrial expansion joint. These components have specific purposes, and they all work together to make the industrial expansion joint function properly. The makeup of the joint itself may also include a tube, carcass, retaining ring, a mating flange, and a control rod. Depending on the application, it will determine if a fabric expansion joint, metal expansion joint, or a rubber pipe expansion joint is needed, and what will work for that specific project.

Industrial expansion joints have a comprehensive range of applications in a wide variety of industries. They can be engineered to exact specifications and made for easy installation. Some manufactures will also connect a industrial expansion joint to any fitting in their own facility and send it out as a complete unit. Innovative products and companies are using high engineering principles and stringent quality standards to market their industrial expansion joints. Click here to learn more.

Rubber Expansion Joints
Fabric Expansion Joint
Pipe Bellows

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