When selecting a bellows from the catalog data pages that will have flanged connections, it is important that the system designer confirm that the flanges he has selected have an adequate pressure. Flanged pipe and fittings are typical components in rigid piping systems. According to asme, to understand the importance of bolted joint assembler training, it is worthwhile to compare bolted joints with the current practices for other pressure boundary joints. Nuts shall be heavy hex in accordance with astm a 194, grade 2h. The valve body helps position itself while bolts are being installed and tightened. Flanged pipe is rated for a maximum working pressure of at least 250 psi. If the flanged pipe joint is subjected to a moment m, then maximum bolt tension of the flanged pipe joint can be found by taking moment at the center of the pipe which gives the equation for maximum bolt tension as shown in equation 1.
Figure 4 on page 12 shows a flange joint broken down into freebody diagrams. Guide to design criteria for bolted and riveted joints second edition. Kopflex brand flanged universal joints are available in sizes from 58mm to 620mm swing 2. The skf assortment includes units compliant with iso standards, north american standards, or japanese industrial standards jis.
If higher ratings are needed, consult american and we will evaluate the application and use of toruseal. This is the most common method of effecting a seal on a flange joint and the compression. Pdf performance of a flange joint using different gaskets under. Background and testing of the megaflange flange adapter. The underground use of the flanged joint is generally not recommended due to the rigidity of the joint and as noted in appendices of appropriate ansiawwa standards. General flanged joint accessories include allthread studs, nuts, gaskets, insulating sleeves and washers, and steel washers. Previous flanged joint alignment guidelines were primarily obtained from fabrication specifications such as asme b31. Stppt036 bolted flanged connections in elevated temperature service vi foreword the early research in design and analysis of bolted joints was conducted in the 1930s and 1940s and this work led to flanged joint design rules, such as the asme section viii, division 1, appendix 2. Pdf joint strength of gasketed bolted pipe flange joint. Very few people in the world truly understand the complexities of the bolted joint and even fewer can provide practical guidance on. See also the tdc or tdf addendum to the smacna duct construction standards. Flange joint definition of flange joint by the free.
Flanged joint article about flanged joint by the free. Pdf for determining the maximum tension in a bolt of a bolted flanged pipe joint, approximate linear distribution of bolt force method is used. The body wall thickness shall be in strict accordance with awwa c504. Combine pdfs and other files word documents, excel spreadsheets, powerpoint ppt files, jpgs, pngs, and more into a single organized pdf thats. The summary of flange data listed below is offered as a guide to assist designers in selecting the most economical flanges for their piping system. The ability to predict the leak tightness of a flanged joint is discussed by the authors. The body shall be constructed of ductile iron astm a536 gr. Analysis of flange joints under external loads journal of. Asme pcc120 revision of asme pcc12010 guidelines for pressure boundary bolted flange joint assembly an american national standard two park avenue new york, ny 10016 usa. Lap joint flanges this is again similar to a slipon flange, but has a radius at the intersection of the centre bore and the flange face to accommodate a type a lap. More recently, joint behavior of bolted flange joints are performed in various studies. Size mean external diameter o unlined pipe cement mortar lined pipe nominal wall thickness a mean internal diameter mass per metre mean internal diameter mass per metre dn mm mm kg mm kg mm 80 98 84 14.
Flanged universals are also commonly known as yoke. The forces produced by the internal pressure and bolts are balanced when a joint is on the verge of opening and blowing out the gasket. Telescoping, or sliding, center shafts are available as standard, or fixed length shafts can be supplied. Pmasup245 break and make flanged joints using hand tools. Initial gasket compression is key to safe, reliable flange. Bolted flanged joints ies integrity engineering solutions. Bolted flanged joint operation ies integrity engineering. Tdc and tdf rollformed 4bolt flanged connections assembled per the manufacturers instructions using gaskets, metal cleats 6 152 long with spacing as shown and four 38 9. The pipe layout must be precisely planned to avoid misalignment errors due to deviations in appurtenances of pipe fabrication. Pmasup245a break and make flanged joints using hand tools.
The pipe layout must be precisely planned to avoid misalignment errors. Initial gasket compression is key to safe, reliable flange joints. Sigdmp4 short bend 4 in c153 ductile iron mj plug mechanical joint less accessory. Flanged joint accessories include allthread studs, nuts, gaskets, insulating sleeves and washers, and steel washers. Bolted flanged joints pressure vessel and piping bolted flanged joints are one of the most complex items of equipment to analyse at any plant. Section flanged axial expansion joint 4 specification flexej flanged axial movement expansion joint with fixed carbon steel raised face flanges drilled to en10921 pn16, multiply stainless steel convoluted bellows. As already described before, the most used flange types asme b16. Hdpe flange adaptor with metal backing ring damaged gasket bolt cut from the water leak between the flange faces. Allthread studs and nuts allthread studs shall be in accordance with astm a 193, grade b7. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users.
Zip files contain dwg, igs, ipt and stp file types. Flange joint leakage is one of the common maintenance problems in refineries and chemical plants. The flange insert f1, f6, fp valves are the ultimate check valve in flanged systems. Material specification 36 flanged joint accessories 1. Pmasup245 break and make flanged joints using hand tools modification history release 1. Skf flanged ball bearing units consist of an insert bearing mounted in a housing, which can be bolted to a machine wall or frame. Supersedes and is equivalent to pmasup245a break and make flanged joints using hand tools application this unit of competency covers the skills and knowledge required to. Valve shaft the shaft shall be made of astm a564 type 630 condition h1150. The series 2100 megaflange is a speedy, onsite fabrication tool which is generous in its. The cause of the failure was determined to be galvanic corrosion due to the use of a carbonsteel seal ring between two stainlesssteel hubs, instead of using a stainlesssteel seal. Each cad and any associated text, image or data is in no way sponsored by or affiliated with any company, organization or realworld item, product, or good it may purport to portray. Pipe may be furnished with one end flanged and the other with virtually any american joint as may be required.
Very few people in the world truly understand the complexities of the bolted joint and even fewer can provide practical guidance on how to eliminate joint leakage. Pdf modeling and analysis of a bolted flanged pipe joint. How to merge pdfs and combine pdf files adobe acrobat dc. From a sample, drawing or cad file, lamons can program. Gaskets for highdensity polyethylene flanges figure 1. Pdf performance of a bolted flange joint is characterized mainly by its strength and sealing capability. Ductile iron flanged pipe for water and other liquids. It also includes solving problems with flanged pipe jointing processes and equipment.
Welding neck, slip on, socket weld, lap joint, threaded and blind flange. Flanged ductile iron pipe flanged joint specifications flanged pipe nom. View pdf pressure class thickness class tyton joint, field lok 350 and flange tyte gaskets meet the specifications, performance requirements and pressure ratings in accordance with standard. For individual product lines and sizes please select from the categories below. The flanged joint design means that pipes are secured by external screws, providing additional joint support for the transportation of substances at high pressure. Supersedes and is equivalent to pmasup245a break and make flanged joints using hand tools application this unit of competency covers the skills and knowledge required to break and make flanged pipe joints using hand tools. We got you covered, and can provide assistance in establishing quality assurance and operational practices that will ensure any leakage is caught early and resolved without major incident.
Bolted flanged joints sealed with a gasket have a long history in the industry. Flange joint definition of flange joint by the free dictionary. Pmasup245a break and make flanged joints using hand tools modification history new unit release 1 unit descriptor this unit of competency covers the skills and knowledge needed to break and make flanged joints using hand tools. Gasket handbook 1st edition fluid sealing association. Valve shafts the shaft shall be made of astm a564 type 630 condition h1150. Bolted flanged joint operation eliminating leakage wont happen overnight, so you need a plan should leakage occur. Traditional flanged joint connections require a tremendous amount of torque on the bolts to achieve a good seal. Guidelines for pressure boundary bolted flange joint assembly. Such systems are ansi awwa standards particularly suited for above ground installation in the following.
For example, the flanged joint requires an excessive amount of torque on the bolts to achieve a good seal. To download all currently available cad files please click here 600mb zip file comprises of. References to current best practice documents, such as asme pcc1. The document specifies the standard design and dimensions of lens shaped gaskets and their facings for dn 10 to dn 200 and pn 63 to pn 400 mainly for piping application. A durable exterior coating further protects the expansion joint from the effects of weathering and oxidation. They provide the simplest and most economical way to install check valves in a piping system.
274 1587 129 495 1236 692 58 341 1603 334 107 1432 130 443 744 1293 1192 938 1069 1008 1030 1018 1435 134 1462 258 1265 24 874 1203 174 744 1164 244 1560 98 1409 1203 180 337 1080 715 1358