Metal expansion joints thermal growth, equipment movement, vibration or pressure pulsation may generate movement in a piping system. These standards combine the knowledge and experience of the associations technical committee and are available. Ejma the expansion joint manufacturers association. The movement depends on the number of convolutions and on the length of the intermediate tube. This pressure balanced expansion joint was custom made for a nuclear facility in texas. View metallic expansion joint catalog download pdf now. Welding is done by qualified welders using machines specially built for the purpose. Maintaining 2ply testable bellows on expansion joint metal rectangular expansion joints that last liners on metal expansion joints best practices on fillet welding. Includes one copy of practical guide to expansion joints includes all amendments and changes through errata, december 2016. Ejma standards pdf free download by foobarugwi issuu. Hyspan expansion joints, expansion joint technical. Always remove this set bolt after piping in completed. This expansion joint is unusual in its design in that it absorbs lateral, axial, and angular movement.
Metallic expansion joint project standards and specifications page 3 of 9 rev. A bellows may also be designed to absorb mechanical. Jul 02, 2019 expansion joint manufacturers association wikipedia new a new book is a book previously not circulated to a buyer. Asme 2ply testable bellows avoiding expansion joint installation problems insider secrets to expansion joint repair. The expansion joint manufacturers association is an organization of a metal bellows expansion joint manufacturers. Expansion joint application and design course covers how to provide flexibility in the piping system by employing expansion joints to accommodate thermal expansion and contraction of sections of pipes or ducts. Its the same method that we can find at ejma standards. Welds comply with every metallugical requirement with regard to. Apr 09, 2020 ejma standards pdf documents similar to ejma 9th standards of expansion joint manufacturers association 9h. Designing with expansion joints becht engineering company, inc. Expansion joints expansion joints made in i ta ly leader in gas, water and solar made in italy emi.
Ejma standards pdf documents similar to ejma9th standards of expansion joint manufacturers association 9h. Prior to 1988, coverage of metallic bellows expansion joints in asme b31. 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. Ejmathe expansion joint manufacturers association, inc. The ejma standards are used worldwide as a reference for the proper. The ejma standards are recognized throughout the world as the authority on the proper. Ejma was founded in to establish and maintain quality design and manufacturing standards.
Ejma standards pdf free download download d77fe87ee0 download ejma the expansion joint manufacturers association standards 2008. Ejma the expansion joint manufacturers association, inc. Fre is the displacement of the longitudinal axis of the expansion joint from its initial straight line position into a circular arc. For designs with higher ejma cycles appendix 26 results are even more anemic.
Good morning friends, i was looking for ejma 9th edition standard. Nov, 2018 the expansion joint manufacturers association is an organization of a metal bellows expansion joint manufacturers. Jul 14, 2019 leave a comment on ejma standards free pdf ejma standards. The latter provides a significantly higher cycle life. Method of setting please take note of the following matters with respect to the operation of expansion joint. Fmh expansion joints design of bellowsdesign of bellows the bellows is the flexible element of an expansion joint consisting of one or more convolutions and the end tangents. It is essential that the weld in the bellows be as strong as the surrounding material. Designing with expansion joints 7 pressure thrust ejma which types of expansion joints have this problem. Complete document standards of the expansion joint manufacturers association, inc. The ejma bellows fatigue curve is a best fit curve based on data that was available, so it provides an expected average cycle life. 3 high quality metallic expansion joints made in europe content 2 applications 3 made in europe 4 production process 6 our values 8 types of movement 9 fabrication possibilities 10 types of expansion joints 11 materials for bellows & connections 12 quality assurance 14 technical questionnaire 15 references we develop and produce high quality stainless steel expansion.
The organization is dedicated to the advancement of expansion joints through cooperative empirical and analytical programs. The expansion joint manufacturers association, inc. The ejma standards are used worldwide as a reference for the proper selection and application of metallic bellows expansion joints. Mar 23, 2020 ejma standards pdf documents similar to ejma 9th standards of expansion joint manufacturers association 9h. Ejma is an organization of the leading international manufacturers of metal bellows expansion joints. Can someone please provide me this standard 9th or 8th edition as well. This expansion joint was fabricated with 304 stainless steel bellows and carbon tee, pipe and tie rods. Bellows were required to be designed in accordance with the rules for pressure design of unlisted components par. Expansion joint manufacturers association wikipedia. It was founded in 1955 to create and maintain a set of standards for quality expansion joint design and manufacturing. Ejma hand calculations x caesar ii intergraph cadworx.
Ejma standards, ninth edition by expansion joint manufacturers association on. An expansion joint is a device primarily formed by flexible bellows used to absorb movements in. Expansion joint manufacturers association wikipedia new a new book is a book previously not circulated to a buyer. The expansion joint manufacturers association ejma, the authority on metal expansion joints, has revised the standards in the latest 10th edition ejma standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type expansion joints for safe and reliable piping and vessel installation. When this movement is not absorbed by the piping system itself, an expansion joint is the perfect solution. Receive a free copy of a practical guide to expansion joints with each printed copy of the tenth edition, you will receive ejmas practical guide to expansion joints, a pocket size primer based on ejma standards. 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. The ejma standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type expansion joints for safe and reliable piping and vessel installation. Fre is the displacement of the longitudinal axis of the expansion joint from its initial straight line position into a. Types types of metallic expansion joints axial expansion. Ejma the expansion joint manufacturers association standards. Hyspan expansion joints, expansion joint technical information. This element is designed to absorb thermal movements that result from a change in temperature in a piping system. The authority on expansion joints the ejma standards receive a free copy of a practical guide to expansion joints with each printed.
This catalog outlines the selection and installation of our metal bellows. The expansion joint association, manufacturers anization. The guide is intended to provide users with a basic understanding of expansion joints. 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. Designing with expansion joints 8 pressure thrust for a bellows type expansion joint, the pressure. On a recent bellows design the ejma expansion joint manufacturers association curve gave a 7000 cycle rating. Ejma was founded in 1955 to establish and maintain quality design and manufacturing standards. Leave a comment on ejma standards free pdf ejma standards. Our exceptional and internationally recognized expertise enables us to offer our customers high quality expansion joints and outstanding services adapted to their needs. It discusses the parameters and conditions specified by the piping system designer and how to design an expansion joint as a cost.
Includes one copy of practical guide to expansion joints. Macoga expansion joints, metal expansion joints macoga. It discusses the parameters and conditions specified by the piping system designer and how to design an expansion joint as a costeffective component. If we do a hand calculation according with ejma, its possible to isolate the compressive load on the nozzle and the load that goes to pump anchor. Ejmastandards expansion joint manufacturers association. Aug 08, 2019 ejma standards pdf documents similar to ejma 9th standards of expansion joint manufacturers association 9h. Standards of the expansion joint manufacturers association. These factors should be fully evaluated by every person selecting and applying expansion joints for any application. 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.
Standards of the expansion joint manufacturers association, inc. The expansion joint manufacturers association is an organization of established manufacturers of metal bellows type expansion joints. Metal expansion joints and connectors, rubber expansion joints, te. Oct 06, 2008 why an expansion joint works part i why an expansion joint works part ii metal bellows cycle life ejma vs. The other is in accordance with the standards of the expansion joint manufacturers association. Other terms used compensator, flexible connector rubber bellows the flexible element within a rubber expansion joint. Ejma the expansion joint manufacturers association standards 2008 ejma expansion joint manufacturers association download bok.
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