What are the types of flange?
Types of Flanges. As already described before, the most used flange types ASME B16.5 are.. Welding Neck, Slip On, Socket Weld, Lap Joint, Threaded and Blind flange. Below you will find a short description and definition of each type, completed with an detailed image.
What is pipe fitting flange?
What is Flanged Pipe Fittings ? A pipe “flange” is a ring of metal, usually welded to the end of a pipe, with holes drilled in it parallel to the pipe center line to accept several bolts: Flange joints are made pressure-tight by inserting a donut-shaped gasket between the flange pairs prior to tightening the bolts.
How to repair cast iron toilet flange?
How to Repair a Cast-Iron Toilet Flange
- Close the shut-off valve behind the toilet to stop the flow of water.
- Remove the lid from the toilet tank. Flush the toilet and hold down the flush lever to drain as much water from the tank as possible.
- Reach inside the tank and unscrew the ball float.
What is a pipeline flange?
What is a Flange...
- Flanges General. A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.
- Materials for Flanges. Pipe flanges are manufactured in all the different materials like stainless steel, cast iron, aluminium, brass, bronze, plastic etc. ...
- Dimensions of Flanges. ...
- Bolted Flange connections. ...
What is a flange on a drain?
What Is a Sink Flange? A sink flange connects the sink drain to a section of pipe called a tailpiece to create a tight seal. It is made of metal and sits around the edge of the drain rather like a collar, and it usually has a grid-like section covering the drain that looks like a strainer.
Why do we use flanges?
Flanges are helpful to connect pumps, valves, pipes, and other parts to form a piping system. Flanges are typically welded or thread screwed to connect. The use of flanges allows a person for maintenance and easy repair of the pipe system.
Is flange a pipe fitting?
One of the most common types of pipe fitting is the flange. Flange pipe fittings are reliable and cost-effective mechanical connectors used in high-pressure piping applications.
What are the two main types of flanges?
Flanges General - Flange Types - Welding Neck or Weld Neck flanges, Slip On flanges, Socket Weld flanges, Lap Joint flanges, Threaded flanges and Blind flanges.
How are flanges attached to pipes?
Socket-weld pipe flanges are typically used on smaller sizes of high pressure pipes. These flanges are attached by inserting the pipe into the socket end and applying fillet weld around the top. This allows for a smooth bore and better flow of the fluid or gas inside of the pipe.
How do you install a flange?
1:474:21Toilet Flange Installation on New Construction - Closet FlangeYouTubeStart of suggested clipEnd of suggested clipTo install the closet flange. You will need primer. And PVC cement begin by applying a liberalMoreTo install the closet flange. You will need primer. And PVC cement begin by applying a liberal amount of primer to the outside of the closet flange.
Why is it called a flange?
From dialectal English flange (“to project”), flanch (“a projection”), from Old French flanche (“flank, side”). See flank. As a term for a group of baboons, it was popularized in the comedy TV series Not the Nine O'Clock News.
What are the types of flanges?
Here's a rundown of some of the most common and popular types of the flange and their uses:Weld Neck Flanges. ... Slip-on Flanges. ... Threaded Flanges. ... Blind Flanges. ... Socket Weld Flanges. ... Orifice Flanges.
Where are pipe flanges used?
The main use of flange is to connect pumps, pipes, valves, and other equipment to make a pipework system. Usually, flanges are threaded or welded, and you can connect two flanges by bolting them with gaskets and providing a seal that gives easy access to the piping system.
How do you identify a flange?
You need to find the outer diameter, the inner diameter, the number of bolt holes, bolt hole diameter, and the bolt circle diameter. Bolt circle diameter (B.C.) is one of the most important measurements to make when identifying a flange.
How many types of flanges in piping?
Types of Pipe Flanges. Pipe flanges can be divided into eight types based on design. These types are blind, lap joint, orifice, reducing, slip-on, socket-weld, threaded, and weld neck.
What is the strongest type of piping flange?
Weld Neck Flanges It gives the highest level of joint integrity as it is butt-welded with a pipe. These types of flanges are used in high pressure and temperature application.
Where can you use flanges?
The main use of flange is to connect pumps, pipes, valves, and other equipment to make a pipework system. Usually, flanges are threaded or welded, and you can connect two flanges by bolting them with gaskets and providing a seal that gives easy access to the piping system.
What is the advantage of flange joint?
The use of flanges allows a person to easy repair and maintains the pipe system. Instead of taking out the whole pipe for inspection, the small section of the pipe can be inspected to find the fault with the help of flange. The flange will allow easy inspection and cleaning of a pipe.
Why flanges are used in piping instead of welding?
These flanges are made of steel and are used for special applications, the major advantage of this flange is that it can be connected to the piping without welding. In certain cases, a seal weld is also used in conjunction with the threaded connection. Screwed fittings are mostly used for smaller pipe sizes.
What is purpose of Anchor flange?
Anchor flanges are forged fittings installed on pipelines and embedded in reinforced concrete blocks. They are used to restrain or limit main line thermal expansion or contraction and transfer built-up stresses to external structures or larger foundation.
What are Pipe Flanges?
Basically, pipe flanges are bulging edges, collars, rims, or ribs used to join two pipes, a channel, and any fitting equipment. They come in different types and can be designed to meet various application requirements and functions, including corrosion resistance and high-temperatures.
Types of Pipe Flanges
Flanges mostly come in six different types. However, these designs can be modified to meet the specific functions and requirements of the applications. Therefore, it’s essential to understand the pressure at the flagged joint, the required strength, and the size of pipes involved.
Categorizing pipe flanges
The most common way of classifying flanges is by considering their shapes. However, it’s essential to understand that there are other ways to categorize flanges, as these come in handy when durability, functionality, and application are in question. These include:
How flanges operate
Flanges have flat or flush surfaces that are vertical to the pipe to which they are attached. The attachment process involves mechanically joining two or more faces using bolts, adhesives, collars, or welds.
What is a threaded flange?
Threaded or Screwed Flange. Threaded flanges are joined to pipes by screwing the pipe are used on piping systems that prohibit direct welding on the pipe. Usually, threaded flanges are used for Galvanized Piping. Industrial Threaded flanges are made in sizes up to 4 inches with various pressure ratings.
Why are flanges not used?
That is why these flanges are not used where severe bending stresses exist. This type of joint avoids the necessity of accurate alignment of bolt holes since the flange is free to revolve on the pipe. So these flanges can be readily aligned with bolt holes of mating flange.
What is slip on flange?
Slip-on pipe flanges are shorter in length than the weld neck flange so can be used where there is space constraint. The inside diameter of slip-on flanges is slightly larger than the pipe OD and so it can slide over the pipe. They are secured to the pipe using two fillet welds from inside and outside.
What is a weld neck flange?
Weld neck flanges are suitable for extreme service conditions to handle repeated bending from line expansion, contraction, or other external forces.
What is lap joint flange?
Lap joint flanges are used as a combination with a lap joint stub.
Can slip on flanges be used for cyclic loading?
slip-on flanges are not suitable for cyclic loading services.
Is welding neck flange expensive?
However, Weld Neck flanges (Fig. 2) are expensive as compared to other flange types. Weld neck flanges require more space and are bulky. Highly skilled manpower is required for the fabrication of welding neck flanges. Weld Neck Flange is available in all sizes & it can be Flat Face, Raised Face, or Ring Type Joint type.
What is a flange used for?
The type of flange to be used for a piping application depends, mainly, on the required strength for the flanged joint. Flanges are used, alternatively to welded connections, to facilitate maintenance operations (a flanged joint can be dismantled quickly and conveniently). Let’s now dive in, showing the key types of flanges with pictures.
What are the most common types of flanges used in piping?
Which are the most common types of flanges used in piping? How do they look like? The key types of flanges are the welding neck, long welding neck, slip-on, socket weld, lap joint, threaded and blind flanges. In addition to these standard flanges, some special ones exist, called Weldoflange/Nipoflange and Elboflange, swivel flange, ...
What is socket weld flange?
Socket Weld Flanges are used for small-size and high-pressure piping that do not transfer highly corrosive fluids. This due to the fact that these flange types are subject to corrosion in the gap area between the end of the pipe and the shoulder of the socket. Their static strength of socket weld flanges is similar to slip-on flanges’, ...
What is a LWN flange?
Long weld neck flanges (“LWN”) are similar to weld neck flanges, with the exception that the neck (tapered hub) is extended and acts like a boring extension. Long weld neck flanges are generally used on vessels, columns or barrels. These flange types are available also in the heavy barrel (HB) and equal barrel (E) types.
What is a reducer flange?
Reducing flanges, otherwise called reducer flanges, have an opposite function than expander flanges seen above, i.e. they are used to decrease the bore of a pipeline.
What is a swivel ring?
Swivel ring flanges facilitate the alignment of the bolt holes between the two mating flanges, a feature that is helpful in many circumstances, such as the installation of large diameter pipelines, subsea and offshore pipelines, pipe works in shallow waters and similar environments.Swivel flanges suit oil, gas, hydrocarbons, water, chemical and other demanding fluids in petrochemical and water management applications.
Why do blind flanges have to withstand mechanical stress?
Blind flanges have to withstand remarkable mechanical stress due to the system pressure and the required bolting forces.
What is a flange joint?
A flanged joint is composed of three separate and independent although interrelated components; the flanges, the gaskets, and the bolting. We are manufacturing flanges in various sizes and material standards. We have large stock of flanges in carbon steel, alloy steel, and stainless steel. A steel flange (forged, cut from plate, or rolled) ...
What is the rating of a flange?
Higher the rating, heavier the flange and can withstand higher pressure and temperature. When the temperature goes up, the pressure goes down, and vice versa. Flanges are classified as per their pressure-temperature ratings which are designated as 150#, 300#, 400#, 600#, 900#, 1500# and 2500#.
What is socket weld flange?
Socket Weld Flanges are used for small-size and high-pressure piping that do not transfer highly corrosive fluids. This due to the fact that these flange types are subject to corrosion in the gap area between the end of the pipe and the shoulder of the socket. 5. Lap Joint Flange.
What is a SWF flange?
Socket-Weld Flanges. The socket weld flange, abbreviated as SWF, is similar to a slip-on flange, except only one fillet weld is made to the flange and pipe. Socket-Weld Flanges has a female socket in which pipe is fitted. Fillet welding is done from outside on the pipe.
Can threaded flanges be fitted without welding?
Threaded flanges can be fitted to pipes of various sizes without welding and this is one chief benefit for which these flanges are highly demanded.
What is a flange in a pipeline?
0 55. A flange is a device that can be used to connect two pipes mechanically, it can also do the connection of a pipe to a tee, valve, choke, or any other equipment to form a piping system. The flanges are elements of a pipeline ...
What are the uses of flanges?
The need for flanges is increasing day by day, flanges are used for many industrial applications it is one of the best coupling methods to join two pipes. A flange would work properly if the components of the flange work properly. Flanged joints are mostly used for the ease of maintenance, flanges are used when the joints need dismantling. In certain pipelines maintenance is needed frequently so breakout flanges are used at definite intervals on pipelines.
What are the need for gaskets in a pipe line and in a valve?
The gaskets are made of different types of material and it can be selected according to process characteristics like pressure and temperature. Gaskets are used in a valve to prevent the leakage in the closure mechanism and it also can prevent the leakage of fluid to the atmosphere. It is used in valves to allow the function of internal mechanisms that depends on separate fluid chambers like a pressure balance trim.
What is threaded flange?
Threaded flanges. These flanges are made of steel and are used for special applications, the major advantage of this flange is that it can be connected to the piping without welding. In certain cases, a seal weld is also used in conjunction with the threaded connection. Screwed fittings are mostly used for smaller pipe sizes.
Why are threaded flanges used?
These flanges are used to connect other threaded components at low pressure. The threaded flanges are mostly used for low pressure and low-temperature applications like water and air utility services. These flanges are inevitable in explosive areas because a welded connection in these areas would be dangerous.
What is socket weld flange?
Socket weld flange. This type of flanges are bored only on one side and these flanges are used for small bore lines only. These flanges are suitable for small-size high-pressure pipelines. The bore of the pipe and the bore are the same and thus it has good flow characteristics. This type of flange will be welded to the ID ...
What is the purpose of a gasket between flanges?
So the gasket between the flanges would give the seal, and the bolts provide forces which is required to seat the gasket and hold the joint together. The flanges provide the surface for the gasket to seal against and carry the applied forces around the gasket. The joint would allow easy disassembly and reassembly of piping or removal of components.
What Are Pipe Flanges?
Types of Pipe Flanges
- Flanges mostly come in six different types. However, these designs can be modified to meet the specific functions and requirements of the applications. Therefore, it’s essential to understand the pressure at the flagged joint, the required strength, and the size of pipes involved. With the correct information comes six types of flanges that an individual can choose from. These include: 1. So…
Categorizing Pipe Flanges
- The most common way of classifying flanges is by considering their shapes. However, it’s essential to understand that there are other ways to categorize flanges, as these come in handy when durability, functionality, and application are in question. These include: 1. Classification by material used includes brass, alloy steel, cast iron, carbon steel, stainless steel, aluminum, or PV…
How Flanges Operate
- Flanges have flat or flush surfaces that are vertical to the pipe to which they are attached. The attachment process involves mechanically joining two or more faces using bolts, adhesives, collars, or welds. Due to the attachment requirements, a flange must fit the equipment or pipe that it’s designed. That’s why it’s necessary to check all the possible specifications and dimensions t…