Type d type d gaskets are specifically designed to fit into the ring groove of ring type joint flanges. Gasket handbook 1st edition fluid sealing association. Bx ring type joint gasket refers to the metal gasket of bxshaped section by processing metal materials. Ring type of flanges rtj, bleed or drip ring flanges. Based on flange facing types, it can be further classified as. About 14% of these are flanges, 23% are pipe fittings. Lap joint from a bolt hole diameter, number of bolt holes, bolt circle diameter, outer flange. Flexitallic style r ring type joints can be manufactured in accordance with all relevant standards to suit the following flange designations. Keywords daniel, flange union, daniel industries orifice plate.
Raised face flat face ring type joint tongue and groove male and female din flange summary chart rated pressure in bar 1 bar 14. About 93% of these are flanges, 3% are pipe fittings. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end. Backed by a group of experts, are involved in providing a widespread range of ring type joint flanges to our esteemed clienteles. Types of gaskets for flanges soft, spiral, ring joint. Custom shapes and sizes are also manufactured by numerous manufacturers. Ring type joint gaskets are metallic sealing rings, suitable for highpressure and hightemperature applications. Rtj flanges are used to ensure a leak proof flange connection at high pressures.
Various types of flanges are available, depending on construction. The inner ring also reduces flange erosion and protects the sealing element. Spades for ring type joint flanges to suit ansi 147 b16. Ring type joints dimensions of class 600 female ring joint facing figure 8 blanks c12 note. In the case of a ring type joint, the surfaces of the flanges should again be free of deterioration, clean, and the ring used should be of the correct type. A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal. Class 900 facing dimensions for ring joint flanges. Inspect the mating flanges to ensure that they are clean and free of all foreign matter before installing the rubber expansion joint. Apr 12, 2018 the ring type joint rtj gasket basics and types. Table 2 awwa c20718 class d ring flanges on coastal flange. It should be clean, degreased and free of any defects, nicks or burrs. The most commonly used standard that covers dimensional information on flange types and flange faces used in process piping systems design to asme b31.
Learn different types of pipe flanges used in piping. Bx ring type joint gaskets,china bx ring type joint gaskets. Page, in estimators piping manhour manual fifth edition, 1999. Also available are bx gaskets with pressure ratings to. A wide variety of ring type joint blind flange options are available to you, such as standard, material. Ring type joint flanges rtj or ring joint facing flanges rjf. A lengthy and costly exercise, both in terms of man hours. Type d gaskets are available in basic oval as well as octagonal shape. Metallic spiral wound gaskets are the most common type used. For more highly specialized applications, ring type joints can be machined from duplex steels and other. 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. Following the acceptance of ring joints for flanges and valves by api and the issuance of their standard, asa b16e on steel pipe flanges and flanged fittings was revised to include them, and the 1939 edition included standard dimensions for a full line of ring joint flanges based on the api.
The flexitallic group is the international market leader. Rtj flanges have grooves cut into their faces which accept steel ring. When a flanged joint is opened, the gasket should be not be reused. A rtj flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together, usually has a raised face with the groove machined into the face of the flange. The type of flange to be used for a piping application depends, mainly, on the required strength for the flanged joint. Bsm rjt fittings ring joint type bsm male rjt stainless steel 316 to identify the size of fitting measure o. The ring type joint was initially developed for high pressure up to 1500 bars and temperatures up to. If raised face flanges are to be used, the flange lip is to be no more than 116 tall. Ringjoint, spiralwound, and jacketed ring type joint. May 12, 2016 a ring type joint flange, abbreviated as rtjf, is a type of flange that uses a metal ring that sits in a hexagonal groove as a gasket to seal the flange pair. Flanges with different faces require different gaskets and shall never be mated to prevent leakage of the joint. They are dimensionally suitable for use with flanges manufactured.
Blind flanges are also used as a manhole cover in the vessel. Dimensions of ring joint facings all pressure rating classes. Rtj face dimensions and flange tolerances texas flange. Cutaway view of bx steel ring and flange as follows. In these pressure classes, most suppliers show the h and b dimensions. Sep 03, 2018 design hub this video shows you flange facing type and gasket. Further to this, when the flanges were disassembled, damage was found on the rtj groove in which the ring type gasket seats. A ring type joint flange, abbreviated as rtjf, is a type of flange that uses a metal ring that sits in a hexagonal groove as a gasket to seal the flange pair. Class 1503006001500 2500 din pn 6 welding necksliponblind flanges. Unless other wise specified by the customer, ring type joint flanges will be furnished in accordance with these. Type d gaskets are specifically designed to fit into the ring groove of ring type joint flanges. Nonmetallic soft gaskets are available as ring type idod gaskets, full face idod with bolt. Flange facing type and gasket part10pipe designasme b31.
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. It is always recommended that the gasket material be softer than the mating flanges. Lap joint flange welding neck flange blind flange screwed end flange socket welding flange flange faces provided. Other flange facings covered by these standards include the large and small tongueandgroove facings, and the ring joint facing specifically for ring joint type metal gaskets. For smaller diameter joints, align the flanges and insert several bolts in the lower half of the flanges. The flange face is the surface area that hosts the gasket. Bx ring type joint gasket is one kind of pressure energized ring gaskets. Standard flange ratings from ansi class 150 to 600, extended rating to ansi.
A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together. A wide variety of flange types pdf options are available to you, such as iron, plastic. However, selecting the right gasket for a leakfree seal requires. For more highly specialized applications, ring type joints. Slipon flanges are slipped over the pipe and welded to provide strength and prevent leakage. They are manufactured of medium weave, fabricreinforced phenolic material and are sized to ansi and api specifications. Orifice flanges are one of the most economical means of measuring flow, and daniel orifice flanges are manufactured to be the most accurate. The types of flanges for piping explained projectmaterials. The most commonly specified flange faces are raised face, ringtype joint, and. In the case of a ringtype joint, the surfaces of the flanges should again be free of deterioration, clean, and the ring used should be of the correct type. They are dimensionally suitable for use with flanges.
The standard response to such flange leakages had been to reweld and remachine the rtj groove of the flange faces and fit a new ring joint. Nominal pipe size groove dimensions diameter of raised portion k. Orifice plates are recommended for clean liquids, gases and lowvelocity steam flows. The article describes the scope of each type of gasket, the dimensions to asme b16.
A spiral wound gasket may include a centering ring, an inner ring or both. C this dimension is commonly associated with true lap joints. Precision engineered flanges ring joint flanges class 150 facing dimensions. 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. Flange faces should be square and free of burrs to allow for correct sealing of nuts. Type r oval and octagonal rtj dimensions to asme b16. Table with dimensions of stud bolts used with raised face and ring type joint flange connections, pressure class 300, asme b16. Email this page download pdf download pdf printable page. It is of pressure energized seal in radial direction, one special kind of octagonal metal ring gaskets. The faces of the flanges must be free of sand, grit, grease, or other foreign matter. How to machine damaged rtj flanges mirage machines. The ring type joint flanges are typically used in high pressure class 600 and.
Flanges are used, alternatively to welded connections, to facilitate maintenance operations a flanged joint can be dismantled quickly and conveniently. Learn about the 5 key flange gaskets types used in the oil and gas industry. Suppliers of flanges to the oil, gas, filtration, refining, petrochemical, desalination and offshore industries. Rtj flanges have grooves cut into their faces which accept steel ring gaskets. They are always applied to special, accompanying flanges which ensure good, reliable sealing with the correct choice of profiles and material. Ring type joint flanges, stainless steel ring type joint. This can also occur with threaded flanges if the pipe is not machined flush to the flange face and lap joint flanges with lighter schedule pipes that are rolled over to. Ring type joint rtj gasket basics and types mechanical. Ring type joint flanges are typically used in high pressure andor high temperature applications and differ from other flanges as angled faces are cut into the flange faces to accept steel ring gaskets, to create a metal to metal seal. Groove depth e is not included in flange thickness t but is included in the connection overall length l. Threaded flanges are also known as screwed flange, and it is having a thread inside the flange bore which fits on the pipe with matching male thread on the pipe. A number of ring joint styles are available designed for specific flange types, these are. It is a forged ring that fits into the machined groove of an rtj flange. Spiralwound gaskets are used with raisedface flanges, and ring joint gaskets are used with ring type joint rtj flanges.
Pipe recommends the use of full face flangetyte gaskets or ring flangetyte gaskets with ductile iron flanged joint products supplied by u. Reducing flanges are available in all types and pressures. Slipon flange lap joint flange welding neck flange blind flange screwed end flange socket welding flange flange faces provided. Ring type joint flange is a method of ensuring leak proof flange connection at high pressures. Watch the video showing set up process of the mm600e flange facing machine. A wide variety of ring type flange options are available to you, such as standard, connection, and standard or nonstandard.
The long tapered hub of wnrf flanges, differentiates them from other types of flanges. Bubble bag, then put in to export wooden neatly in to dimensoons during transportation to prevent bumpsscratches and other situations encountered or as per customer requirement. Characteristics gasket profiles and limiting values. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to.
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. It is based on proven technology, has no moving parts and is suitable for hightemperature and highpressure applications. Ring joint flanges catalogue hydraulic and offshore supplies. The ring type joints are manufactured as per asme b16. Flange faces raised face rf, flat face ff, ringtype joint.
Nonmetallic gaskets are used with flat or raisedface flanges. Flanges used in piping orifice, threaded, slipon, blind, weld neck, socket, lap joint, and reducing are available with a variety of facings, such as raised, flat, and ring joint. It has good sealing as the contact between gasket and the ring joint faces, especially the outside face, and is pressed tightly to keep good sealing performance. 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. If the mating flange is plastic or frp it is recommended to use a. Ring joint gaskets and grooves probably originated in the boiler field, where they were used in various forms for manhole covers, autoclaves, and other closures. Stress develops between an rtj gasket and the flange groove when the gasket is bolted to a flange, leading to plastic deformation of the gasket. Amardeep steel centre is one of the leader manufacturers, supplier and exporters of high quality ring type joint flanges, rtj flanges, stainless steel ring type joint flanges, ss rtj flanges, carbon steel rtj flanges, alloy steel ring type joint flanges, nickel alloys ring type joint flanges in india.
Stud bolts dimensions for raised face and ring type joint. Some sizes of bx ring type joint gaskets should have the pressure hole through the ring cross section. Nowadays it can be found on valves and pipework assemblies. Gasket profiles and limiting values ring joint gaskets are made from metallic materials. The handbook covers typical flanges and gaskets that are used in. Dimensions and tolerances are in accordance with asme b16. Distance between flanges or ring joints when ring is compressed p a h c d l.
Rtj flange manufacturers, ring type joint flanges, ss rtj flange. Pressure rating at atmospheric temperature is 175 psi for sizes 12 and under and 150 psi for sizes 14 and up. Supplier of stainless steel and carbon steel ring type joint flange, in mumbai, check rtj flange dimensions and price list. A blind flange is a plate for covering or closing the end of a pipe. Marcel piping is renowed ring type joint flange manufacturers in india, a asme b16.
For more highly specialised applications,ring type joints can be machined from duplex steels and other exotic materials such as monel,inconel. Successful sealing of problem flanges in high temperature. Rtj face dimensions and flange tolerances pdf for printing. These gaskets were designed specifically for the unique surface of ductile iron. Pdf piping joint handbook danny ferdiansyah academia. The ring type joint material is selected in order to suit the application conditions. The rtj type orifice plate incorporates an integral gasket, either oval or octagonal ring, for mounting between ring type joint flanges. The ring flangetyte gasket is a high performance gasket for flanged joint piping systems. Flanges include slip on flanges, blind flange, weld neck flange, socket weld flange, lap joint flange, orifice flange, spectacle blind flange, spades and spacers, anchor flange, swivel ring flange and bespoken flanges. Kammproadapter gaskets allow for ring type joint flanges to be mated up to a raised face flanges, utilizing the strengths of the full metallic with the added benefit of kamm profiled sealing surfaces laminated with flexible graphite. This jointing method can be employed on weld neck, slipon and blind flange. The more commonly used ring type joint materials are soft iron, low carbon steel and different types of stainless steel. Hole size where required due to bolt spacing shall be the same as the flange bolt hole.
Ring type joint flanges, ss ring type joint flanges, ss 316. If you need help deciding which flange best suits your application, feel free to. This type of joint connection is speedy and simple but not suitable for high presser and temperature applications. Scan this qr code to access the fsa gasketed joint questionnaire from the fsa website. The most commonly specified flange faces are raised face, ring type joint, and flat faced.
Rf, ff, rtj flange face and finish projectmaterials. The outer centering ring centers the gasket within the flange and acts as a compression limiter, while the inner ring provides additional radial strength. Female ring joint groove dimensions shall be designed for octagonal rings in accordance with ansi b16. There are five different types of asme flanges that are readily available and used throughout industry. A lengthy and costly exercise, both in terms of man hours and lost production, but in many cases this did not solve the issue and a repeat failure occurred with. Bx ring type joint gaskets,china bx ring type joint. The flanges seal when the bolts are tightened and the gasket is compressed into the groove making a metal to metal seal.
698 1390 1249 962 124 1563 1170 875 386 620 625 130 714 1129 1198 1155 355 965 1418 594 1038 526 860 702 147 1104 12 1539 383 51 967 1539 924 206 1374 1165 508 1015 1015 339 1112 574 1316 542 1153