A ring seal is a ring with an approximately ovoidal crosssection which fits into two grooves, one on each of the two flanges. Api flange, api 6a flanges, api 605 weld neck flange. Precision engineered flanges ring joint flanges class 150 facing dimensions. A single rubber sealing type joint that employs a circular rubber gasket assures a tight, permanent seal. The flanges are held together by means of tapered headless bolts, numbering from four to twelve depending upon the diameter of shaft. In a marine type flange coupling, the flanges are forged integral with the shafts as shown in fig.
Reducing flanges are available in all types and pressures. Lap joint from a bolt hole diameter, number of bolt holes, bolt circle diameter, outer flange diameter perspective, these flanges are all the same. Materials having acceptable forming qualities to produce lap joint ends are copper, coppernickel, titanium, carbon steel, and stainless steel. Flanges and fittings in order to address the vacuum industries requirements, alcatel offers a large range of accessories based on the 3 most popular standards used in vacuum technology. Texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. Rtj flanges seal when tightened bolts compress the gasket between the flanges into the grooves, deforming or coining the gasket to make intimate contact inside the grooves, creating a metal to metal seal. Groove depth e is not included in flange thickness t but is included in the connection overall length l. The wide range of types also means that there is a flange joint suitable for most transported mediums. A flange joint is a connection of pipes, where the connecting pieces have. What fasteners should i use for my bolted flange connection. Produced in nominal diameter up to 1600 mm for pressure up to 20 mpa.
The designs shown in the ansi expansion joint section can be easily modified to include a special fitting one end such as a caterpillar flange, waukesha turbo flange, weld end or even a metric flange. Mss sp44 also covers nps 12 to nps 24 flanges which are equivalent to asme b16. Download expansion joint brochures and catalogues belman as. Ring type joint gasket and grooves for pipe flanges by bureau of indian standards.
Pdf piping joint handbook danny ferdiansyah academia. It is composed of a hub, or stub end, welded to the pipe and a backing flange, or lapped flange, which is used to bolt the joint together. Flange drillings in en10921 are generally the same as bs4504 and din 2501 but en10921 covers a wider range. Ixrings for compact flanges compact flanges keep replacing conventional flanges. Loose ring welded steel flange gost 1282280 it consists of a flange and a ring. The flange member sealingly two machines or installations for bonding a construction member is generally produced as a standard. Table 1 flange gasket materials, type and thickness flange class working pressure nominal pipe diameter thickness psi kpa in.
Api 6a specification for wellhead and christmas tree equipment. A flange can also be a plate or ring to form a rim at the end of a pipe when fastened to the pipe for example, a closet flange. An alloy hub with a galvanized steel backing flange is cheaper than a complete alloy flange. Ring type joint flange is a method of ensuring leak proof flange connection at high pressures. This type of seal is used particularly for high pressure plant. Oval ring joint gasket, china oval ring joint gasket. Oval ring joint gasketdescription the ring type joint was initially developed for high pressure and temperature applications found in the petroleum industry and is primarily used in the oil field on drilling and completion equipments. Ring joint flange to rf flange asme mechanical code. A hub and constant velocity joint assembly comprising a device for reversibly locking the constantvelocity joint 2 with respect to the hub 1, wherein the constantvelocity joint 2 is axially locked to said hub 1 by means of a springlock ring 21 of circular cross section recessed in a circumferential groove 22 in part formed on said joint 2 and in part on said hub 1. A wide variety of joint flange options are available to you, such as ansi, asme, and din. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. Additional decisions involve facing and surface finishes, and the appropriate. A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal.
Bs flange is a flange system from england, which have flange type including welding neck flanges, plate slipon flanges, screwed boss flanges, slip on boss flanges, blind flanges etc. Gaskets are made as per by construction, materials and features. Gasket handbook 1st edition fluid sealing association. This type of rtj gasket is machined to tight manufacturing tolerances to ensure correct installation with standard asme b16. However, manufacturing processes do not allow for perfect sealing surfaces. Mss sp25 marking system for valves, fittings, flanges and. An ideal flanged joint would consist of two, mirrorfinish, perfectly flat and parallel surfaces bolted directly together to create a leak free seal. A number of ring joint styles are available designed for specific flange types, these are. Flange couplings in kubota engines 194 flange couplings in perkins engines 195 flange couplings in deutz engines 196 bowexelastic technical data and displacements 198 type he1 and he2 199 type he3 and he4 200 type hezs and hew 202 type heg 204 monolastic type with 3 holes 206 type sae 207 examples of application 208. The flange and ring correspond to one diameter and pressure. General location of the flange piping, although their use is common on machines. Table 2 awwa c20718 class d ring flanges on coastal flange. Spades for ring type joint flanges to suit ansi 147 b16. They are precision machined, metallic rings that are designed to fit.
Lap joint flange class 150,class 300,class 400,class 600,class 900,class 1500 and class 2500 dimensions. In these pressure classes, most suppliers show the h and b dimensions. Download fulltext pdf download fulltext pdf download fulltext pdf download fulltext pdf. The other main kind of seal for flanged joints is the ring seal, also known as a lens or ring type joint rtj. You can also choose from welding, female, and male joint flange, as well as from standard, nonstandard joint flange, and whether joint flange is stainless steel, carbon steel, or aluminum. The rings come in three different kinds of steel and are coated with ptfe in varying colours in order to distinguish between them. Flanges have been successfully used in various types of pipe. We are manufacturer, supplier and exporter of high quality ring type joint flanges rtj flanges. In lees loss prevention in the process industries fourth edition, 2012. This jointing method can be employed on weld neck, slipon and blind flange.
The ring type joint flanges are typically used in high pressure class 600 and. We thanks to our skilled staff, we can produce a large number of iso 9624 flange iso 70051 flange that comply with the different current standards. The more popular ring type joint materials, with the recommended maximum hardness and identification as specified in api 6a,are shown in the table below. The best access doors, fire rated access panel, access panels for drywall. Rf, ff, rtj flange face and finish projectmaterials. A flange joint is a plate or ring to form a rim at the end of a pipe when fastened to the pipe. Pipe flanges and flanged fittings abangah sanaat baran. Slipon flange lap joint flange welding neck flange blind flange screwed end flange socket welding flange flange faces provided.
The rtj gasket is primarily used in high pressure high temperature flange gasket applications. Fire rated and general access doors panels for drywall, ceiling, floor, roof custom sizes. Due to the change of the designation of the sealing surface mistakes may occur occasionally. Flange joint synonyms, flange joint pronunciation, flange joint translation, english dictionary definition of flange joint. In fact, the english flange word is entered directly into turkish. Standard specification for lap joint flange pipe end applications. First, identify the tops by determining whether a flange has a flat face, threaded bore, lap joint, weld neck, socket weld, or tongue and groove. The term flange is also used for a kind of tool used to form flanges. Rtj flanges have grooves cut into their faces which accept steel ring gaskets. A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together. The principle governing document for the selection of water joint gaskets is awwa c20720. Types of gaskets for flanges soft, spiral, ring joint.
Check api 6a flanges and api 650 flange dimensions. Based on flange facing types, it can be further classified as. Ring joint flange is a special type of flange connection in which a metal ring resting in a groove in the flange serves as a pressure seal between the two flanges. Pipes restrained mechanical joint alternative to friction mj restraint systems. The flanged joint design means that pipes are secured by external screws, providing additional joint support for the transportation of substances at high pressure.
Used wherever a sound welded joint connection is needed threaded the bore of this flange is threaded to match the pipe size. This flange is a solid circle drilled to match a companion flange. This type of flanged joint is typically found on high alloy pipe work. This datasheet is for flanges that have a ring type joint rtj end connection. Most flange faces have surface irregularities that cannot be sealed without the use of some type of compressible, resil. The lap joint flange pipe connections shall be produced in accordance with accepted shop practices, and shall be free from burrs and cracks that would affect their suitability for intended service.
These 7 factors are all involved in choosing the right flange for the right application to maximize its functionality. Lap joint flange dimensions class 150 to class 2500. It should be clean, degreased and free of any defects, nicks or burrs. Flanged joint article about flanged joint by the free. A flange is an external or internal ridge, or rim lip, for strength, as the flange of an iron beam. Used for low presure systems and where welding could be hazardous. Thickness total thickness neck hub radius holes raised face net base weight diam. For more highly specialised applications,ring type joints can be machined from duplex steels and other exotic materials such as monel,inconel. Class 1503006001500 2500 din pn 6 welding necksliponblind flanges. The ixrings are designed and used where the norsok cfc compact flange connections are in use. Flanges table, flanges dimensions, flanges standard chart, flanges size chart india. Api 6a flange material consists of many other elements such as stainless steel, hastelloy, monel, inconel, titanium, duplex steel, nickel alloy, copper nickel and many more.
The 6 available types of flange face are flat ff, raised rf, ring joint rtj, lap. A new engineering tool which concisely and comprehensively clarifies the answers to the most common questions, issues and concerns in relation to expansion joints. The number of bolts may be choosen from the following table. In the design of water pipe systems, bolted flange joints are usually given. A blind flange is a plate for covering or closing the end of a pipe. Mss sp44 is the only source for the nps 22 flange dimensions above. The engineer or designer must choose among several flange options.
R type ring joint gaskets are available in oval or octagonal crosssection and manufactured according to api 6a and asme b16. Get our free mobile app now to shop, get pricing, access and pay your. All eriks ring type joint gaskets are manufactured in compliance with api6a and ansi b16. Bolt circle diameters are 18 inch larger than bolt. Microsoft word 150 lap joint with 30 and 36 author. Its pretty easy to identify the type of flange by how it looks. If you need help deciding which flange best suits your application, feel free to. Raised face flat face ring type joint tongue and groove male and female din flange summary chart rated pressure in bar 1 bar 14. Apr 06, 2020 the flange joint allows for quick and effective connecting of pipe sections and for joining sections of piping to ancillary equipment such as pumps, valves, and metering devices. Flange faces raised face rf, flat face ff, ringtype joint. Additional in depth information about these kinds of flanges can be found on the ring type joint page.
Class 900 facing dimensions for ring joint flanges. Learn different types of pipe flanges used in piping. Flanges table, flanges dimensions, flanges standard chart, flanges size chart we export. The 1912 edition included the coverage of blind flanges.
To order a reducing flange, state the smaller size first, then the. C this dimension is commonly associated with true lap joints. The rubber gaskets fits the inside contour of the bell which seats the gasket. Din flanges summary chart rated pressure in bar 1 bar 14. The flanges are rollformed directly onto the duct, thus saving on any extra flange material to handle, cut or waste hvac for life inc also makes sure to use the latest technology from precision coil processing and metal forming machinery, tooling and integrated systems manufacturing standards and tdc construction tables as authorized by smacna andor ashrae. Section 4a api 6a type 6b, 6bx flanges and studded crosses and tees api flanges flanges and studded blocks are designed and manufactured in accordance with the following specifications. Jan 08, 2014 the computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. Whether you are looking for a standard ring type joint gaskets or custom design assemblies, our team of application engineers have the product and application knowhow to find the right solution for your specific application. Flange dimensions en10921 introduction british metric standard bs4504 is now obsolete and replaced by en10921 edition 092008 for steel flanges which also incorporates din standard. This pushon type joint is simple to assemble and fast to install. Hardness of materials for rtj gasket on compression of the flange assembly, it is imperative that the ring type joint be signficantly softer than the flange groove so that the gasket plastically deforms and not the groove. Ansi rtj flanges cl150cl2500 ansi ring type joint flanges.
Dimensions and tolerances of ring joint gaskets type r asme. Temperature capability a correlation exists between the metallurgical and chemical what fasteners should i use for my bolted flange connection. Important gaskets used are nonmetallic, spiralwound and ring joint type fig. Buttweld steel flange to gost 1282180 installation is performed by one weld, which simplifies installation and reduces time costs.
These are of ring type and are designed with raised face. Blind flanges are also used as a manhole cover in the vessel. Rf and ff flanges may have different types of finish i. As referred to by many in the industry, our team of expansion joint experts are ready to assist you with your engine exhaust system. Flange type typ as in en 10921 01 plate slipon flanges for welding hubbed threaded flanges 02 loose plate flanges with weldon plate collar 21 integral flanges 04 loose plate flanges with weldneck collar 32 weldon plate collars 05 blank blind flanges 33 lapped pipe ends. Lap joint flange welding neck flange blind flange screwed end flange socket welding flange flange faces provided.
There are five different types of asme flanges that are readily available and used throughout industry. They are mechanical seals, generally ringshaped type and fitted for sealing flange joints. Isokf flanges and fittings isok flanges and fittings cf flanges and fittings for each standard, alcatel offers the normalized nominal diameters. Product style product image note download leader ring type joint pdf bx bx ring gaskets are manufactured in a special symmetric shape of the crosssection. Thus, a comparison is done only for this sealing surfaces. Previous flanged joint alignment guidelines were primarily obtained from fabrication specifications such as asme b31. Flange joint definition of flange joint by the free dictionary. Distance between flanges or ring joints when ring is compressed p a h c d l. The gasket must match the dimensions of the flange and should contact the entire sealing. Flanges shail be denoted with flange type and the flange number. Lap joint flange dimensions are covered in asme b16. Figures 1 and 2 show flange types and ancillary components with the relevant flange type numbers. The roughness rz of the old raised face form c and the new one b1.
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