Garlock expansion joint style 204 3d contentcentral. Expansion joint and sealant cad details are provided here in quickview. Angular, lateral, and axial misalignment, and or torque, will cause shearing stresses. A 304 stainless steel twoply metal bellows expansion joint was intentionally damaged by drilling or. Architectural details building expansion joints roof.
Apr 10, 2017 expansion joint cad details library for sealants and expansion joints from emseal in autocad. Please provide as much detail as possible so we can provide you with accurate information. Definition of the use of expansion joints bellows in piping. The angular expansion joints move in an angular rotation in one or. Expansion joint bellow type metallic expansion joints are oldest and most efficient and functionally reliable compensator for all applications involving high temperature and pressure. Review the performance data and choose the single ply bellows length that is best suited for your exhaust or ducting system. Metal expansion joints and metal bellows hose master. Expansion joints and bellows are used in piping systems. Air inlet and exhaust manifold and component assemblies. When using flexicraft metal bellows expansion joints, you can be assured they were designed and built to last. Expansion joints technical manual fluid sealing products. They are made of accessories like flow liners, covers and tie.
An expansion jointbellow element employed in a piping system is an assembly of generally more than one convolute in series. Welded m etal bellows can be designed to compensate for axial compression and extension, lateral offset, and angular deflections. At this type of pressure balanced expansion joints as the small bellows are compressed, the balancing bellow is extended. This selection of the most suitable material is often done according to customer. We use the following definitions but the terms bellows and expansion joint are typically considered as interchangeable. Bellows expansion joints because the bellows expansion joint is required to absorb thermal andor mechanical movements, the bellows element must be constructed of a. For over 100 years, minor rubber has been a leading manufacturer of high quality rubber bellows for a wide range of industrial applications. Universal expansion joints with two bellows and a connecting pipe are used to absorb large movement. For application to curbs style ej important sizing note. The system must be piped to eliminate misalignment at the expansion joint. It is usually furnished with limit rods or full thrust tie rods, depending upon the service.
What is the need of expansion joints and bellows in piping. Metal bellows expansion joints for expansion and contraction. Fccu expansion joints are a key component in this pipe system, and the careful selection of bellow material is important. Bellows were required to be designed in accordance with the rules for pressure design of unlisted components par. High temperature kevlar rubber expansion jointpump connector. Single tied metallic expansion joints with twoply alloy bellows. Rubber bellows rubber expansion joints minor rubber. Expansion joint an expansion joint is a complete unit with metal bellows or rubber. They can be designed to exceed design temperatures of 2000f and pressures in excess of 300psi. Highly flexible and able to absorb axial lateral angular movement. Standard designs are 2 through 14 nps with 2 or 3axial.
To meet the varied demands of our clients, we are offering this bellow expansion joint in various specifications at costeffective. Standard designs are 2 through 14 nps with 2 or 3axial compression. Welcome to triad bellows stainless steel exhaust bellows data sheets page. Our provided joint is basically used for absorbing the temperature variant effects on. We also offer customdesigned metal bellows to meet your specific needs. Expansion joint assemblies, selection is based upon ability to provide flexibility in specific directions space requirements support requirements one good source of information is found in a practical. Our leadership has been earned through consistent application of solid engineering principles, stringent quality standards and product innovation to produce safe and reliable metal expansion joints and flex connectors for hvac. Series 1500 laminated bellows expansion joints are designed for installations where the principal movement is axial. Pdf the failure of a bellow expansion joint of 304 stainless steel has been analysed. Contact flexible specialty products expansion joints. Rubber bellows with connection parts flange or thread movement absorption. 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. Fccu expansion joints with refractory lining belman as. Our provided joint is basically used for absorbing the temperature variant effects on machines and materials where it is joined.
This design for an expansion joint relies on flexing of the copper material to accomodate movement. Expansion joints absorb variations of ducts caused by thermal expansion and contraction. Externally pressurized expansion joints and compensators senior flexonics is recognized as a leader in the metal expansion joint industry. Use our different data sheets as references to see which bellows will meet your needs. Rubber bellows rubber expansion joints minor rubber products. All garlock expansion joint styles have been rigorously lab and field tested to ensure long life and reliable service. Metal bellows expansion joints floating flanged 12 metal bellows expansion joints fixed flanged 12 metal bellows expansion joints welding necked 12 externally pressurized expansion joints welding necked externally pressurized expansion joints floating flanged fixed flanged universal tied expansion joints floating flanged 14. Prior to 1988, coverage of metallic bellows expansion joints in asme b31. Rubber bellows are used as extension joints for moving parts, providing flexible alignments and noise and vibration absorption.
Comflex metallic expansion joints engineering guide. Sleeve of the expansion joint is failing and because of these failures, bellows directly exposed to hot gases also. These joints also absorb vibrations due to flow of gases. Metal bellows expansion joints floating flanged 12 metal bellows expansion joints fixed flanged 12 metal bellows expansion joints welding necked 12 externally pressurized expansion joints. 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. These motions are possible because of the ability of the convolution.
This approach is acceptable as long as the radii of all bends that flex are at least 14. In addition, they provide protection for equipment and parts from contaminants found in manufacturing and industrial environments, including dust, moisture, oils, chemicals, and uv. Using customerprovided components from an expansion joint removed from service, hose master can replace bellows and often reuse preexisting. View an instant pdf of the product of the week showcase book. Dont rotate or torque the expansion joint to match bolt holes in the mating flanges. Teflon expansion joints corrosion proof, nonaging with extraordinary flex life and unmatched reliability. Service conditions are 150 psig or 300 psig to 500f. Review the performance data and choose the single ply bellows length that. The first invention, a metal hose which was developed and patented in 1885, was followed by a patent for the metal expansion joint in 1920. A universal type expansion joint is one which contains two bellows with a connecting pipe between them. Dwf files where available are under specific product joint sizes. Using customerprovided components from an expansion joint removed from service, hose master can replace bellows and often reuse preexisting pipe and fittings.
Garlock expansion joints offer superior performance, reliability, and service life, resulting in improved plant safety and increased mechanical integrity of equipment. Axial, lateral, angular and simultaneous movement absorption is possible. What is the difference between a bellows and an expansion. Failure of the duct is been observed in expansion joints. These elements include expansion joints and metal bellows as well as metal hoses, automotive components and pipe supports. Metal bellows expansion joint offers greater compression than the standard mc. Expansion joint bellows are capable of movement in an axial, angular or lateral direction. Comflex metallic expansion joints engineering guide 2 to order or get further details, call your local contact shown on rear cover or listed at. Nonmetallic expansion joints and flexible couplings are ideally suited for a wide variety of industries. Witzenmann, the inventor of the metal hose and founder of the metal hose and expansion joint industry is the top name in this area.
Thus the internal pressure of the expansion joint remains unchanged. Kaishu guan et al stated the failure of a bellow expansion joint of 304 stainless steel has been analysed. A bellows expansion joint is an assembly of two or more bellows which help to tackle expansion or contraction in the system. 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. Find technical information for expansion joint products. Senior flexonics engineers and manufactures fabric, ptfe, and metal expansion joints and is recognized as the leader in the metal expansion joint.
We specialize in double cuff end and tapered bellows for. It is usually furnished with limit rods or full thrust tie rods, depending upon the service conditions. This offers a costeffective option when dealing with very large diameter expansion joints and special designs. Control rods are not designed to restrain bellows pressure thrust. All of our expansion joints carry safety ratings that exceed product specifications in areas such as pressure and movement.
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. Piping should be lined up accurately before installing the expansion joint. Exhaust systems application and installation guide 2 2. It cannot withstand mechanical abuse and perform its intended function without repair or replacement. This joint is manufactured using excellent quality alloys and progressive techniques. A typical expansion joint is comprised of one or more metal bellows most commonly stainless steel or from materials. Tie rods or limit rods stabilize the center pipe connection and distribute movement evenly between bellows. This selection of the most suitable material is often done according to customer requirements, the specification andor based on experience. Cover a device used to provide limited protection of the exterior surface of the bellows of an expansion joint from foreign objects or mechanical damage. Flexible specialty products can design and manufacture c ustom m etal bello w expansion joints based on your specific requirements, from 3 diameter to 120 diameter. 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. Series 1500 laminated bellows expansion joints hyspan.
Horizontal expansion joints behind other expansion joint covers, plates or fillers. 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. As depicted in the fi gure, pressure balanced expansion joints are placed between the intermediate anchor and the equipment, thus the thermal. The angular expansion joints move in an angular rotation in one or several planes, controlled by a pair of hinges or a gimbal. The singleply metal bellows used in our standard expansion joints are made in 2 standard lengths, 9 live length and 12 live length. Its designed that end pipe and flange are welded at the both edge of bellows. Bellows were required to be designed in accordance with the rules for pressure design of unlisted components. Repair of bellows expansion joints journal of pressure. Metal bellows expansion joints offer a cost effective alternative to other expansion devices while optimizing the productive life of a piping system. Expansion joint assemblies, selection is based upon ability to provide flexibility in specific directions space requirements support requirements one good source of information is found in a practical guide to expansion joints by the expansion joint manufacturers association, inc.
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. No need for additional intumescent bellows noninvasive anchoring means no drilling or modification to the substrates ul 2079 tested and certified common applications. Stress corrosion cracking scc caused by wet hydrogen sulfide. Angular expansion joints allow angular movements only, contrary to axial expansion joints which elongate and compress in the pipeline axis. Pdf failure of 304 stainless bellows expansion joint.
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