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The joint choices when it comes to expanding expansions

The joint choices when it comes to expanding expansions

Any device that contain one or several bellows that function by absorbing dimensional changes are considered expansion joints. These dimensional changes are often due to thermal expansion or pipeline contraction. The expansion joints relieve stress on flexures and angles due to slab confinement. Usually, these joints are placed near or between structures that connect fixed elements like buildings, columns, or bolted machinery. These joints allow for contraction and thermal expansion without causing system stress. Although joints function in the same manner, different joints are suited for different structures. Ensuring the use of correct joints guarantees strength and longevity of the building or structure.

A pipeline system that connects vessels and pumps usually require expansion joints with metal bellows. The rotation within the bellow provides lateral, angular, and axial movements. Welded-end or flanged-end joints are usually made by using standard bellows. Adding hinges, ties, and other accessories provides greater lateral and angular movement for the system. Standard bellow designs often include two bellows for support and long wear. The bellows’ shape and number, material, and degree of movement determine the speed or rate of wearing out and failure. Of course, unforeseen forces that have strength beyond the bellows’ limits and joints’ designs inevitably cause weakening and failure.

Piping systems that use large-diameter pipes are usually fitted with thick-wall expansion joints. These systems and joints operate at optimum level in low pressure. These are expensive but are actually more cost-effective over time. Different metals are selected to suit varying temperature and thermal levels. Effective design structure and correct installation ensure longevity of these joints which justify initial investment.

Low-pressure hot gas transfer requires fabric expansion joints. Combinations of fabric layers, metal foils, and insulation accommodate changing system pressures and temperatures. These layers also reduce the abrasiveness of floating solid particles in the gas. To promote endurance of the pipes and joints, gas flow rate, and temperature are often considered in structural designs. Despite these preventions against wearing out, periodical fabric belt replacement is necessary.

Although movement is important in fitting expansion joints, excessive axial rotation is a problem. For this problem, a slip-type joint is usually used. Materials for these joints are chosen based on abilities to accommodate pressures and high temperature. Sealant and packing are added to the design to minimize movement and prevent further abrasions from solids. “Wipers” are special applications that prevent clogging of slip movement space.

It is important to choose appropriate expansion joints in piping projects. Defective joints are usually the cause of collapse, gas leakages, and instability of structures. Pipe fitting is a project that is too large and complicated for a single person to do. It is better to consult and hire professional contractors to do the job for efficiency and safety.

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The Best in Expansion Joint Products – Help Your Business

The Best in Expansion Joint Products – Help Your Business

Elaborate piping systems need to be designed with the necessary flexibility to handle movement caused by such factors as vibration, thermal changes, or the movement of equipment. This is true of virtually all industrial piping systems, whether they conduct water, gas, steam, oil or any chemical products.
Pressure and temperature may vary greatly in any given system. In order to provide this flexibility, expansion joint products are needed to protect the integrity of the system. Sometimes a piping system needs metal expansion joints and sometimes fabric expansion joints are called for.
In either case careful engineering and manufacturing ss necessary in order to get a high quality solution to the expansion joint needs of your business. While a wide variety of metal expansion joints, fabric expansion joints, and metal bellows joints are manufactured to meet most requirements, it is not uncommon to have the manufacturer specially design solutions to fit unique business needs. If your organization is in the market for any of these products you’ll want to use a top-rated company that uses the latest in technology to design expansion joints or metal bellows to your exact specifications. You also want to be assured that any product you buy meets the Expansion Joint Manufacturers Association, (EJMA) minimum requirements.
The variety of products offered on the market today is designed to meet the needs of any piping system your business may have. Unrestrained assemblies include Single Expansion Joint Assemblies, Universal Expansion Joint Assemblies, and Externally Pressurized Expansion Joints. The product line of restrained assemblies includes Tied Single Bellows Assemblies, Tied Universal Assemblies, Hinged Bellows Assemblies, and Gimbel Bellows Assemblies. Each of these products meets a specific need.
There is also a wide group of specialty expansion joint products available in today’s market including those for the aerospace industry, heat exchangers, Fluid Catalytic Cracking Units, and many more. These specialty products come in both metal and fabric designs and the pressure tolerance for these products ranges from full vacuum to 2000 psig.
Any company making these products should maintain a strong commitment to excellence and stand 100% by its products. The entire line of products is usually guaranteed to be free of any defects in both workmanship and material. In addition, the companies often guarantee that products will be repaired or replaced if any defects occur within one year of installation or eighteen months of delivery. If you’re in need of expansion joint products you can start the process by getting a quote from a good company for your products regardless of the applications you need them for. Most of these businesses are members of the EJMA and all of their products meet at least the minimum EJMA requirements.
The expansion joint industry is highly specialized and if you’re in need of any products for your piping system you want to get the best available on the market. Don’t be pressured into settling for anything less.

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How Expansion Joint Systems Work

How Expansion Joint Systems Work

Expansion joint systems are an innovative alternative for pipes and pipelines. These joints can be used in the oil, paper, and petrochemical industries and in many others fields.
The diversity of expansion joints available for application is great. They are usually manufactured at standard dimensions and can reach from 1 to 200 inches in diameter; can withstand temperatures from minus 300 degrees F up to 4000 degrees F and can resist at full vacuum or 2000 psig.
The introduction of fabric expansion joints on the market completely revolutionized the way that engineers solve thermal expansion, corrosive and abrasive problems. These fabric joints can be used in different applications for turbines. With different fabric membranes and designs, extensions joints can easily be used for turbine exhaust applications (GTX). GTX are rather problematic applications that pose distinctive challenges concerning performance and resistance through time but which can now be more easily solved with the help of fabric joints.
Metal bellows are generally used in pipeline systems that connect pumps and vessels. The design of the folds in the metal bellow allows for greater axial, lateral, and angular movement. To increase the angular or lateral flexibility, ties, pivots and other trimmings can be added to a metal bellow. The life span of these devices is determined by the shape, material, degree to which the junction must be able to move, and of course, forces that are greater than the designed limits.
With the help of these bellows, flanged-end and fused-end expansion joints can be quite easily and quickly fabricated. Both universal and double expansion joints use two bellows.
Metal expansion joints are crucial components for pipeline technology. They are used to counterbalance length changes, which usually occur in pipelines from temperature changes. Besides this, they are capable of absorbing vibrations developed by pumps, engines, compressors or turbines. Depending on the situation, axial and lateral movement as well as angular movement can be compensated. Metal expansion joints offer a cost effective choice and enhance the productive life cycle of a pipeline system. Designed to last as long as the system; metal bellows reduce sealing problems and the large space needed with alternative expansion equipment.
Some of the most vital and complex categories of expansion joints manufactured are those used in FCCU (fluid catalytic cracking unit). The reason for the complexity is these expansion joints have to withstand extremely high temperatures (1400 degrees F) and pressures, extreme and aggressive environments and great movement conditions.
To ensure a good function of these systems, absolute attention and skill is mandatory in designing the bellows and hardware. All FCCU joints are specially designed for every application in which they are used because any failure during installation can be hazardous to personnel and extremely expensive to users. Accepted specifications offer the basis for the design of the bellows and joint hardware of the FCCU joints.