Blind flange





The blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. This blind flange is available in various sizes and materials and is used to provide positive closer on the ends of pipes, valves or equipment nozzles.

This flange helps in easy access to a line once it has been sealed. The blind flange is sometimes custom made or machined to accept a nominal sized pipe to which reduction is being made. This reduction can be a threaded reduction or welded reduction.




Blind flange

Blind Flanges
The blind flange is used to close ends of piping systems. It is a kind of round plate with no center hold but with all the proper bolt holes. This blind flange is available in various sizes and materials and is used to provide positive closer on the ends of pipes, valves or equipment nozzles.

This flange helps in easy access to a line once it has been sealed. The blind flange is sometimes custom made or machined to accept a nominal sized pipe to which reduction is being made. This reduction can be a threaded reduction or welded reduction.



Flat Face flange

The Flat Face flange has a gasket surface in the same plane as the bolting circle face. Applications using flat face flanges are frequently those in which the mating flange or flanged fitting is made from a casting.

Flat face flanges are never to be bolted to a raised face flange. ASME B31.1 says that when connecting flat face cast iron flanges to carbon steel flanges, the raised face on the carbon steel flange must be removed, and that a full face gasket is required. This is to keep the thin, bittle cast iron flange from being sprung into the gap caused by the raised face of the carbon steel flange.

This flange helps in easy access to a line once it has been sealed. The blind flange is sometimes custom made or machined to accept a nominal sized pipe to which reduction is being made. This reduction can be a threaded reduction or welded reduction.

What Is a Blind Flange?



A blind flange is a solid disk used to block off a pipeline or to create a stop.
Similar to a regular flange, a blind flange has mounting holes around the perimeter and the gasket sealing rings are machined into the mating surface. The difference is that a blind flange has no opening for fluids to pass through. Instead, it is placed in between two open flanges, which stops the flow through a pipe. Many times this type of blockade is used when adding another line onto an existing pipeline or when a new valve is being added.
Often a blind flange is inserted into a pipeline when a repair is required further up the line. This allows the flanges down stream to be disconnected without fear of losing liquid. Many times this type of blockade is used when adding another line onto an existing pipeline or when a new valve is being added. This blockade is also used to shut down a line when it is no longer needed.
Without the blind flange it would be difficult to perform maintenance or repairs on a pipeline. The flow would need to be shut off at the nearest valve, which could be miles away from the repair area. Valves are also very expensive and are prone to sticking. The blind flange is a much more cost efficient way of sealing a pipe.
When a pipeline is being constructed, a blind flange is often incorporated into the final length of pipe. This design allows for expansion or continuation of the pipeline by simply adding onto the final flange. This holds true for the addition of tees in the pipeline as well. A tee can be installed and then blocked in order to leave the option of running a pipe at a later date.
The use of flanged pipe has allowed pipelines to be built in a much faster manner than traditional welded seam pipelines. Moreover, it has made the task of repair and sectional replacement a simpler job. Sections of pipe can now be assembled anywhere in the world and shipped to the job site. Once there, they can simply be bolted into place and the pipeline can resume transportation of its liquid cargo.
Where are Blind Flanges Most Commonly Used?
Blind flanges are commonly used in petrochemical, pipe engineering, public services and water works.
A blind flange is useful for making repairs to a pipeline further up the line. In fact, during construction of a pipeline, a blind flange may be built into the final length of pipe. This allows for expansion or continuation of the pipeline simply by adding onto the final flange.
What Do Blind Flanges Do?
Blind flange usage
Without a blind flange, it would be next to impossible to repair or perform ongoing maintenance to a pipeline unless the flow was shut off at a earlier valve, which could affect miles of pipeline.
The use of flanged pipe has significantly sped up the process for constructing pipelines. It has also made the task of repair and sectional replacement easier. Sections of pipe can now be assembled anywhere in the world and shipped to the job site. Once there, they can simply be bolted in place and the repair is done.
What Do Blind Flanges Do?
A blind flange is useful for making repairs to a pipeline further up the line. In fact, during construction of a pipeline, a blind flange may be built into the final length of pipe. This allows for expansion or continuation of the pipeline simply by adding onto the final flange.
BLIND FLANGE IN CREATE A STOP
SPECTACLE BLIND IN OPEN POSITION
BLIND FLANGE IN BLOCK OFF A PIPELINE
SPECTACLE BLIND IN CLOSED POSITION
Without a blind flange, it would be next to impossible to repair or perform ongoing maintenance to a pipeline unless the flow was shut off at a earlier valve, which could affect miles of pipeline.


DIN2566 PN10/PN16 Threaded Flange

Pipe flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification.
DIN2566 PN10/PN16 Threaded Flange Manufacturer supplies DIN2566 PN10/PN16 Threaded Flange, DIN2566 PN10/PN16 Screwed Flange in forged steel, Stainless Steel, Carbon steel: C22.8, RST37.2, S235JR, P235GH, P245GH, P250GH, ASTM A105, ASTM A182 F304 (1.4306), F304L(1.4307), F316(1.4404), F316L(1.4404), F321(1.4541) etc.
DIN 2566 PN10 DIN 2566 PN10
Dimension and Weight of DIN2566 PN10/PN16 Threaded Flange
Rated
Diameter
d1Flange DiemnsionNeckRaised faceScrews
Dimension
Weight of a flange
(7,85 Kg/dm3)
ThreadDbkh1d3d4fNumberThreadd2Kg
1521,3R 1/295146520354524M 12140,613
2026,9R 3/4105167524455824M 12140,91
2533,7R 1115168524526824M 12141,1
3242,4R 1 1/41401610026607824M 16181,6
4048,3R 1 1/21501611026708834M 16181,78
5060,3R 216518125288510234M 16182,43
6576,1R 2 1/2185181453210512234M 16183,18
8088,9R 3200201603411813838M 16184,12
100114,3R 4220201803814015838M 16184,47
125139,7R 5250222104016818838M 16186,13
150165,1R 6285222404419521238M 20227,92

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Pipe fitting

Pipe fitting
Pipe fitting is work that involves the installation or repair of pipes or tubes. Pipes and tubes are necessary for a wide range of reasons.

Flanges General

Flanges General
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.