types of flanges and their applications pdf

Types Of Flanges And Their Applications Pdf

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Below you will find a short description and definition of each type, completed with an detailed image.

Learn more. A look at the common characteristics you should consider when choosing a flange for your piping system. Offering a reliable way to connect pipe systems with the various equipment, valves, and other components of virtually any processing system, flanges are the second most used joining method after welding. Using flanges adds flexibility when maintaining piping systems by allowing for easier disassembly and improved access to system components.

Types of Flanges

The pipe flanges are the second most used joining method after welding. They are used when joints need dismantling. It provides flexibility for maintenance. Flange Connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance is required during plant operation. A flanged joint is composed of three components; flanges, gaskets, and bolting; which are assembled by pipefitter.

Special controls are required in the selection and application of all these elements to attain a joint, which has acceptable leak tightness. However, it is not advisable to use a flange connection in underground piping when it supposed to be buried.

The flange is also the most common source of leak and fire in a process plant. There are a variety of flanges available to suit the requirements. A flange can be classified in several alternate ways based on the following:. 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. This type of joint connection is speedy and simple but not suitable for high presser and temperature applications.

Threaded Flanges are mostly used in utility services such as air and water. Socket-Weld Flanges has a female socket in which the pipe is fitted. Fillet welding is done from outside on the pipe. Generally, it is used in small bore piping and only suitable for low pressure and temperature application.

Slip-On flange has a hole with matching outside diameter of pipe from which pipe can pass. The flange is placed on pipe and fillet welded from both inside and outside. Slip-On Flange is suitable for low pressure and temperature application. Lap flange is having two components, a stub end, and a loose backing flange.

Stub end is butt-welded to the pipe and Backing flange freely moves over the pipe. The backing flange can be of a different material than stub material and normally of the carbon steel to save the cost.

Lap flange is used where frequent dismantling is required, and space is constrained. Weld neck flange is the most widely used type in process piping. It gives the highest level of joint integrity due to Butt-welded with a pipe. These types of flanges are used in high pressure and temperature application. The blind flange is a blank disc with a bolt hole. These types of flanges are used with another type of flange to isolate the piping system or to terminate the piping as an end.

Blind flanges are also used as a manhole cover in the vessel. Reducing flange is used in place of a standard flange to allow for a change in pipe size. This flange eliminates the need for a standard reducer in piping. The flange consists of one specified diameter with a smaller diameter bore size. Except for the bore and hub dimensions, a reducing flange has dimensions of the standard pipe flanges size and is considered an economical means to make a pipe size transition.

These flanges are available in weld neck, slip-on, and threaded end types. Reducing flanges are an economical way to make transitions between pipes of different sizes, however, due to high-pressure loss, they are rarely used in piping. ASME B It is similar to a weld neck flange but increases the size of the pipe to the first or second larger size. It is an alternative to using reducer and weld neck flange. Useful for connecting to valves, compressors, and pumps. These flanges are specially designed.

Dimensions of the weld neck are in line with the connecting pipe, other dimensions are in accord with standard ASME B Flangeolet is a combination of olet mainly weldolet or nipple and flange. As you can see in the image that hub length is longer like long neck weld flange. It is a 90 Degree branch connection use for high-pressure piping. You can see the image of the flangeolet branch.

As the name suggests, the flat face flange has a flat face. Flat face flanges are used when the counter-flanges are flat face. This condition occurs mainly in connection to Cast Iron equipment, valves, and specialties. Full face gasket is used when a flat face flange is used. Raised face flange has a small portion around the bore is raised from the face.

The gasket seat on this raised face. The height of the raised face depends on the flange pressure-temperature rating that is known as a class of the flange. The inside bore circle type of gasket is used with a raised face flange. Ring joint type face flange has a specially designed grove in which metal gasket seat. This type of flange is used in high pressure and temperature services. Thank You for subscribing to Hardhat Engineer. Your Ebook will Open in New Tab. In this article, the following types of flanges are covered.

9 Types of Pipe Flanges – A complete Guide for Engineer

Flanges are a pipe fitting which function is to join two pieces in a piping system, and easily separate them at a particular time, allowing be disassembled without destructive operations. By function and utility, the flanges are present in many sectors and areas such as construction and industry. And usually these standards are not interchangeable. Many of the flanges in each standard are divided into "pressure classes", depending on the different rates of pressure that are able to endure. The most common flanges pressure classes are , , , , , and according to ASME designation. Flanges from different pressure classes are not usually interchangeable. There is a wide variety of designs, sizes, materials and standards in relation to the flanges.

The pipe flanges are the second most used joining method after welding. They are used when joints need dismantling. It provides flexibility for maintenance. Flange Connects the pipe with various equipment and valves. Breakup flanges are added in the pipeline system if regular maintenance is required during plant operation. A flanged joint is composed of three components; flanges, gaskets, and bolting; which are assembled by pipefitter. Special controls are required in the selection and application of all these elements to attain a joint, which has acceptable leak tightness.

The following dimensional standards shall apply to metallic flanges, and bolthole patterns of non metallic companion flanges:. Flat face flanges, with full-face gaskets, shall be used when one or both of the mating flanges in a joint are ASME B Class gray cast iron, aluminum, or plastic, can be over-stressed by bearing against a raised face. Adapter rings may be necessary in some cases, to level off the surface, for mating equipment. Raised face flanges shall be specified in ratings up to Class


mating pipe or fitting so there will be no restriction of product flow. This prevents turbulence at the joint and reduces erosion. • This flange type will be welded to a​.


6 of the Most Common Flange Types Used in the Oil and Gas Industry

Сьюзан остается в живых, Цифровая крепость обретает черный ход. Если не преследовать Хейла, черный ход останется секретом. Но Стратмор понимал, что Хейл не станет долго держать язык за зубами. И все же… секрет Цифровой крепости будет служить Хейлу единственной гарантией, и он, быть может, будет вести себя благоразумно.

 - Сейчас находится в шифровалке. Смотри. Стратмор пришел вчера с самого утра, и с тех пор его лифт не сдвинулся с места.

 - Уничтожить всю нашу секретную информацию? - Сьюзан не могла поверить, что Танкадо совершит нападение на главный банк данных АНБ. Она перечитала его послание. СЕЙЧАС ВАС МОЖЕТ СПАСТИ ТОЛЬКО ПРАВДА - Правда? - спросила.  - Какая правда. Стратмор тяжело дышал.

 В Севилью - по делам? - настаивал Ролдан. Ясно, конечно, что это никакой не полицейский, это Клиент с большой буквы.

The 13 Types of Flanges for Piping Explained

 ARA обслуживает в основном американских клиентов. Вы полагаете, что Северная Дакота может быть где-то. - Возможно.  - Стратмор пожал плечами.

 Колдун, - пробурчал он себе под нос.  - Ну и публика собирается там каждый вечер. ГЛАВА 53 Токуген Нуматака лежал на массажном столе в своем кабинете на верхнем этаже. Личная массажистка разминала затекшие мышцы его шеи. Погрузив ладони в складки жира на плечах шефа, она медленно двигалась вниз, к полотенцу, прикрывавшему нижнюю часть его спины. Ее руки спускались все ниже, забираясь под полотенце. Нуматака почти ничего не замечал.


pipe so there will be no restriction of product flow. three types of flanges: Welding Neck, Slip On and used in applications where welding is hazardous.


Socket-Weld Flanges

 - Панк не понимал, к чему клонит Беккер. Пестрое сборище пьяных и накачавшихся наркотиками молодых людей разразилось истерическим хохотом. Двухцветный встал и с презрением посмотрел на Беккера. - Чего вы от меня хотите. Беккер задумался: Я бы хотел, чтобы ты как следует вымыл голову, научился говорить по-человечески и нашел себе работу.

На пальцах ничего. Резким движением Халохот развернул безжизненное тело и вскрикнул от ужаса.

3 comments

Sutercgecpe1996

Starrett drill and tap chart pdf spoken english book in hindi pdf

REPLY

Sophia W.

Fast forward seven years into a world which has been through significant cost-cutting following the global downturn, and has a perilously low oil price, and it would be safe to assume such attitudes to leakages have not changed.

REPLY

Stacy T.

Which are the most common types of flanges used in piping?

REPLY

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