Expansion joint bellow type metallic expansion joints are oldest and most efficient and functionally reliable compensator for all applications involving high temperature and pressure. An expansion joint or movement joint is an assembly designed to hold parts together while safely absorbing temperatureinduced expansion and contraction of building materials, and vibration, or to allow movement due to ground settlement or seismic activity. We use the following definitions but the terms bellows and expansion joint are typically considered as interchangeable. The expansion tallies with that of the chosen compensator.
This expansion joint is unusual in its design in that it absorbs lateral, axial, and angular movement. Download expansion joint brochures and catalogues belman as. Its end fittings include welding nipples, fixed flanges ot. Flange connection general stainless steel metal bellow expansion joint is the most common and popular, it is mainly used in pipe connection, aborb the extension and compression of pipe, according to different working situation, usually we recommend different structure, but for most common, we recommend general stainless. Hence, type of raw material and its properties, its geometric features, other influencing design factors, construction or. Also known as a double bellow expansion joints, these are made with 2 bellows that are connected by a. B6 guardian 306 ezflo garlock guardian 306 ezflo spooltype expansion joints feature an fep lining that is fused to the body of the expansion joint. Stress corrosion cracking scc caused by wet hydrogen sulfide was responsible for the failure. A bellows expansion joint is an assembly of two or more bellows which help to tackle expansion or contraction in the system.
Definition of the use of expansion joints bellows in piping. Tie rods or limit rods stabilize the center pipe connection and distribute movement evenly between bellows. Technimex rubber bellow expansion joints are the best solution to isolate vibration, dampen noise and pressure surges coming from for example engines, pumps andor turbines. The expansion tallies with that of the chosen compensator the fixes points are dimensionned so that they can absorb the reaction forces and stiffness rate that arise during use. Also known as a double bellow expansion joints, these are made with 2 bellows that are connected by a spool or pipe section. Flange connection general stainless steel metal bellow. This offers a costeffective option when dealing with very large diameter expansion joints and special designs. Metal expansion joints and metal bellows hose master. As specifically engineered products that are inserted in a rigid piping system, garlock rubber expansion joints.
Rubber bellow expansion joint technimex international bv. Metal bellows expansion joint provides perfect balance between value and performance. The pressure master expansion joint offers exceptional value as a method of absorbing long axial thermal expansion in pipelines and process systems. Expansion joint bellows are capable of movement in an axial, angular or lateral direction. Highly flexible and able to absorb axial lateral angular movement. View an instant pdf of the product of the week showcase book. Our expansion joints are known and trusted by clients the world over, with thousands of installations for clients like abb air preheater, samsung engineering, and general electric. These bellows are made up of alloy 316 stainless steel and also stock alloys 304 and 321 with other special alloys available. Metallic expansion joint project standards and specifications page 3 of 9 rev. Expansion joint an expansion joint is a complete unit with metal bellows or rubber bellows and end fittings, plus, optionally, liner, cover and external hardware. Universal expansion joints universal joint bellows kp.
Consisting of flanged ends and a flexible section, much the same as a flanged metal bellows, the rubber expansion joint can absorb within its free length more. When using flexicraft metal bellows expansion joints, you can be assured they were designed and built to last. The basic flexible element of an expansion joint is the metal bellows, which is. Bellows expansion joint with hydroformed bellows for minimal residual stresses. Tie rods or limit rods stabilize the center pipe connection and. Flange connection general stainless steel metal bellow expansion joint. This report describes the analysis carried out to investigate the causes of failure using fea package and analytical method. Additionally, these expansion joints are suitable to compensate thermal elongation or even misalignments. A universal type expansion joint is one which contains two bellows with a connecting pipe between them. When it comes to the design and manufacture of expansion joints, adsco is an industry leader recognized the world over for the quality and innovation of our products. Nonmetallic expansion joints in addition to metal products we manufacture nonmetallic, duct type, fabric and composite expansion joints for the power generation, pulp and paper, cogeneration, and ship building industries, as well as many other types of industry.
The most common fitting configurations are flanges or beveled weld ends. The addition of the rubber properties and nyloncord reinforcement provides a flexible pipe joint that is easy to. At triad bellows we believe that design integrity is key to building metal bellows expansion joints that will last. The failure of a bellow expansion joint of 304 stainless steel has been analysed. These motions are possible because of the ability of the convolution. They are commonly found between sections of buildings, bridges, sidewalks, railway tracks, piping systems, ships, and other structures. Metal expansion joints installation instructions pdf. The expansion joint shall be able to handle the axial, lateral, angular or rotational movements or a combination of one or more above, at all operating conditions. Technical committee tc342, as well as its national equivalent, which are responsible for issuing gas. This product is designed for the chemical processing and.
Once you have determined the part that best matches your requirements, we will be able to see if a standard or custom design would be the most beneficial for your situation. In addition to fabric and metal expansion joints, badger provides onsite services for inspection, repair, and replacement of expansion joints. Expansion joint bellows expansion bellows manufacturer from. It is usually furnished with limit rods or full thrust tie rods, depending upon the service conditions.
A new engineering tool which concisely and comprehensively clarifies the answers to the most common questions, issues and concerns in relation to expansion joints. Pdf failure of 304 stainless bellows expansion joint. Technimex rubber bellow expansion joints are the best solution to isolate vibration, dampen noise and pressure. This inline pressure balanced expansion joint is designed for cases when anchoring to the piping system is not feasible or pressure loads are too high for equipment like pumps and turbines. The plain bearings serve only for correct initiation of movement in the expansion joint. Stainless steel expansion joints low pressure and high pressure metal expansion joints are designed and manufactured in strict accordance with the expansion joint manufacturers association ejma latest 10th edition. Do not weld in the near vicinity of a nonshrouded expansion joint without protecting the expansion joint from damaging weld splatter. We are offering expansion bellows to our client,which are used to absorb movement in piping caused by thermal changes. Use our different data sheets as references to see which bellows will meet your needs. Rubber bellow expansion joint en technimex international bv. High temperature kevlar rubber expansion jointpump connector. The reason behind the widespread usage of universal expansion joints is that unlike a lot of the other types, these can contain movements in all 3 directions namely lateral, axial, and angular.
Adsco offers everything from toroidals to low corr, high corr. Teflon expansion joints corrosion proof, nonaging with extraordinary flex life and unmatched reliability. These factors should be fully evaluated by every person selecting and applying expansion joints for any application. No one can offer greater security or variety in meeting your needs for steam or any other applications. This inline pressure balanced expansion joint is designed for cases when anchoring to the piping system is not feasible or pressure loads are too high for equipment like. Expansion joint replacement is also available if the current product has failed or needs to be replaced. The tefbellows is an expansion joint that combines the properties of metal and ptfe into the most advanced expansion joint available for highly corrosive piping systems. If an expansion joint is to be installed underground, or will be submerged in water, contact the manufacturer for speci. Metal bellows expansion joints for expansion and contraction. You can also find technical information as a pdf download at. Flexicraft industries flexible piping solutions expansion joints 19,935 views 15. The bellows, the flexible part of the expansion joint, is a multilayer construction with thin layers of heat resistant stainless steel or nickel alloys.
The teflon expansion joint has a widespread acceptance in the chemical processing industry, piping applications where acids and highly corrosive chemicals are being handled and commercial heating and air conditioning systems as pump connectors and a strategic point throughout a system. Furthermore, an important suggestion should be made that the effect of environmental medium on fatigue life must be paid more attention to when dealing with fatigue analysis for bellows expansion joints. The inline pressure balanced metal bellows expansion joint is used in a straight piping run to absorb axial movement with minimal thrust forces imposed on the system anchors. Rubber expansion joints concentric reducer rubber expansion joint r series temperature pressure relationship temperature degrees fahrenheit pressure derating factors series s series t 170 1. The performance of expansion joint is mainly depends on the geometric features of bellow. Garlock expansion joints offer superior performance, reliability, and service life, resulting in improved plant safety and increased mechanical integrity of equipment. Design modifications are provided to ensure proper working of the expansion joint. Dec 29, 2018 flexicraft industries flexible piping solutions expansion joints 19,935 views 15. Careful selection of the expansion joint design and material for a given application, as well as properly engineered installation are important factors in determining performance. Jm is the only manufacturer to complement its membrane offering with a full line of specialty roofing products that include expansion joint covers, edge metal systems, roof vents and drains, and. What is the difference between a bellows and an expansion. Torsion destabilizes an expansion joint reducing its ability to.
Each inline pressure balanced expansion joint is designed for a specific pressure, temperature and axial compression rating. Expansion joint bellows expansion bellows manufacturer. Metal bellows expansion joints offer a cost effective alternative to other expansion devices while optimizing the productive life of a piping system. Metallic bellows the main element of an expansion joint, which consists of one or more convolution, is called bellow. Specialty roofing products johns manville jm is a total roofing systems provider meeting the needs of the commercial and industrial roofing industry. Low corrugated rubber bellows with reinforcing inserts and builtin packing profile for absorption of the swivel flanges. Kaishu guan et al stated the failure of a bellow expansion joint of 304 stainless steel has been analysed. Welcome to triad bellows stainless steel exhaust bellows data sheets page. As a founding member of the expansion joint manufacturers association ejma in 1955, badger continues to be an active in the development of expansion joint design technology. Pdf optimization and standardization of flanged and flued. Known for its high pressure capabilities, the toroidal or omega shape is unique in the industry. Review the metal expansion joint flexible coupling models below to choose the optimal design for your application, or contact our highly trained staff for assistance. In contrast to fitting example 2, axial movement of the vertical pipe arm is disregarded.
699 704 309 321 1018 638 794 780 1340 1153 811 958 1245 478 765 451 1138 1330 1023 1440 647 76 320 1456 116 611 170 720 1033 1229 990 1087 908 692 1108 758 1315 665 945 583 974 216 1162 242 1068 875 1484 1181 276 1139 816