What is a flange?
Perhaps in the first step, before defining flange covers or shield covers, it is necessary to define Flange flanges: Whenever we want:
Connect the two pipes in one place
We need to change the direction of the pipe with one knee at the end of a pipe and then connect that bend to another pipe.
Connecting a pipe to a valve (butterfly valve (butterfly), gate valve, wing valve (ball), check valve (one-way) and 2)
Connecting a pipe to measuring equipment and instruments (FV), FIT (FLOW INDICATOR TRANSMITTER, etc.)
And things like that
A connector is used between these components, which is called FLANGE. Some of the above will be shown in the following figures.
Equipment required to connect flanges
There are two different connection modes: 1- Connecting two flanges directly to each other (This mode is usually used in cases such as connecting two pipes to each other or connecting one pipe to the knee.) – Flange cover or simple shield cover is more in this Mode is used 2- Placing a valve or special equipment in the middle of the pipeline route (in this case, the equipment itself usually has a flange on both sides and each of the flanks on both sides is screwed to the flange closed to one end of the pipe. – In some Cases like the first picture, which shows a butterfly valve, the device itself has holes for the screw to pass from the first flange to the second flange – Shield cover or flange cover is also used in this case, but has a special design They are more than case design.) In the following, an image of both cases is shown in the cover installation mode. (In case two, for better understanding, the image before and after installation is given.)
In each of the above cases, the equipment used to connect the flanges is usually as follows:
Bolt – It is closed on one side and threaded on the other side – if the screw is two ends of the thread and is not closed on one side, it is called Stat bolt.
Washer – Flat washer or spring washer
Nut
Gasket – Used to seal and prevent liquids from leaking out of the pipe.
Connecting flange types
Flanges, like other pipeline equipment, come in many forms. Depending on the type of pipe and the application, they can be connected to the pipe, valve, elbow, etc. by welding, thread or glue, and on the other side, they can be connected to another flange with bolts and nuts, but in some cases it is necessary. To close the pipeline, a group of flanges called blind flange is used. These flanges are flat (without holes in the middle) and are usually used at the end of a pipeline that does not need to be connected. The following is an example of a blind flange and a weld neck flange, for example.
Flange cover or shield cover
Now that we are a little familiar with the flange. It is the turn of flange covers and shield covers (sometimes also called flange shields). In cases where a specific material project (acidic fluid, hot liquid, chemical, hot steam, etc.) is in progress in the pipelines. To protect the connection areas of the pipes against leakage and splashing of fluid due to special conditions, in these areas, coatings are used to cover the flanges. If for any reason these areas are sprayed out due to loose screws or lack of sealing gasket, fluid or steam, the coating will prevent the material from spraying around the pipe and hitting people. From which route they are traveling. Since these coatings are made of special materials, not only will they prevent the material from spraying, but they will not deform themselves. The sprayed liquid (or vapor) will eventually drain from the bottom of the cover. These special coatings, which are designed separately for each flange size and completely closed around it to prevent direct spraying of materials inside the pipe in sensitive cases, are called flange covers or shield covers. Types of shield covers (or flange covers) are as follows:
Anti-acid cover (flange cover) anti-acid, using anti-acid coatings (anti-acid fabrics including PP propylene) Antic acid cover shield. Anti acid cover flange
Shield cover (flange cover) for hot steam (protection against hot steam) high vapor cover flange. high vapor cover shield. super heat cover flange. vapor cover
Shield cover (flange cover) for protection against chemicals Anti chemical cover flange. Anti chemical cover shield
Shield cover (Flange cover) to protect against hot fluids Anti Hot liquid cover flange. Anti hot liquid cover shield
And other cover flanges (cover shields or flange shields) depending on the needs of the employer
Projects of Mobin Sanat Rastin Company
Click here to see the list of projects of Mobin Sanat Rastin Company.
It is worth mentioning that the production of cover flanges (cover shield or flange shield) for industrial projects in the country is only a small part of the activities of Mobin Sanat Rastin Company. The main fields of work of Mobin Sanat Rastin Company include the following: (Click on each section to get more information)
Contracting industrial projects in the fields of electrical, instrumental, mechanical, piping, civil, structural, architectural and… (design, supply and execution)
Alborz Horizon Wire and Cable Sales Agency
Supply of stainless steel cathodes
Supply of lead anodes
Design, supply and implementation of heat trading system
Price of cover shield or cover flange produced
The price of your shield cover (or flange shield)
based on flange size, type of fabric (hot steam protection fabrics, anti-acid-like fabrics, propylene or PP fabrics or other types of fabrics based on the needs of the esteemed employer) and the required amount It can vary from any number. What is certain is that the price of manufactured shield covers is much better than foreign shield covers and their quality is competitive with imported items. Contact us for more information. (Click here to go to the Contact Us page.)
Cover images of anti-acid flanges produced by Mobin Sanat Rastin Company
Contact us to get more pictures of flange covers produced by Mobin Sanat Rastin Company. ( click here. )
