Flange Installation Guidelines

What to look at before beginning the installation?

Accessories or connections for the flange: Properly introduced flanged connections give progress fitting to join substitute funneling materials, a mechanical way to interface with valves and other hardware, and join channeling frameworks where continuous destroying might be required. The notched substance of the flange gives a fluid-tight seal on the gasket when flanges are appropriately gathered, upheld, and legitimate torque is applied to the bolts.

Gaskets: Full face 1/8" thick elastomeric material with a Shore A Durometer hardness of 50-70; gasket material is chosen should be viable with application and liquids passed on. Varieties in a gasket material and shore hardness may influence the fixing torque required.


Dimensions of the flange:  Dimensions are more than after according to the ANSI Flange dimensions. Flange ring bolt opening dimensions adjust to ANSI B 16.5 Class 150 bolt design. Strung flange center points are tightened iron line size strings per ANSI B2.1. Attachment flange center points adjust to ASTM D2467 tightened attachment dimensions.

Check for the pressure rating: Maximum pressing factor rating for formed flanges ½" through 12" breadth 150psi non-stun at 73°F. Proper temperature de-rating factors should be applied when working at raised temperatures more prominent than 73°F.

Bolt Torque or Bolts: Select appropriate bolt size, amount, length, and washers for the particular sizes of flanges and gear being collected. Continuously utilize two (2) wide level washers per bolt (one under the head and one under the nut). Strings ought to be spotless and all around greased up. The bolts to be chosen depending on the flange thickness. Recheck the flange thickness and flange wall thickness before beginning to assemble them on site.

The Installation

When the flange hub is accurately joined to the pipe and permitted to fix appropriately, and the piping framework is upheld appropriately, the strategy for joining two flanges is as per the following:

·    Ensure the framework is appropriately upheld and adjusted, and that mating surfaces of flanges being joined are definitely not isolated. Try not to utilize bolts to adjust the framework or arrange flanges. 

·     With gasket set up, adjust all bolt holes of mating flanges by pivoting the flange ring into position.

·      Supplement all bolts, level washers (two standard level washers for every bolt), and nuts.

·       Be sure the essences of the mating surfaces are flush against the gasket before bolting down the flanges.

·     Utilizing the outlined bolt-fixing grouping appeared underneath, fix every one of the nuts by hand until easy. When it is easy by hand, fix the bolts entirely inverse one another (180°) utilizing the arrangement that appeared with a torque wrench. Apply uniform pressing factor across the flange by fixing in phases of 5 ft-lb increases until definite torque values appeared in the accompanying table are gotten. Don't over fix. Do not over-torque the flange.

·    Care should be taken to try not to twist stresses to the flange when mating to raised confronted flange, metallic flange, fixed flanged items or wafer-style valves. The plastic flange, attached pipe, fitting, and or valve should be upheld appropriately to dispose of stress on the plastic flange.

To Conclude,

Gaskets are essential elements and must be handled and installed well. Taking care of the material and thickness of the gasket ensures successful installation of the flange thereby permitting you to work.  The type of accessories depends on the flange specifications. Dimensions requiring to be more prominent, ASME flange dimensions (mostly) are used as a standard reference to ensure quality and geometric dimensions and tolerances.

If you still have any doubts about flange installation, do let us know in the comment section!

 

 

Comments

Post a Comment

Popular posts from this blog

What Is The Scope And Purpose Of Installing Flange Guards?

Image
Flange guards act as protective shields that are useful in preventing the leakage of the various harmful chemicals from the joints of the flanges, valves, pipelines, etc. The chemical industries work at risk each day. Many pharmaceuticals and chemical industries work with different types like caustics, chlorine, alkaline, acid, or other harmful chemicals that are highly reactive with natural substances. It may also cause damage to the machine and man and may result in explosions. If you want to avoid such situations, you should go for the installation of  custom flange  guards at the joints of the pipelines as it is the safest option. How to fix flange guards at the pipeline’s joint Here are some ways to fix flange guards at the pipeline’s joints: Preventing spray-outs The device is useful enough to help block the path of any spray out from the joints of the valves and pipelines. It is an effective way to prevent situations that may lead to injury and damage. Preventing corro
Read more

Plate flange vs Slip-on Flange

Image
There are many kinds of flanges available in the market like blind flanges , butt weld flanges, slip-on flanges, weld neck flanges, and more. Here in this blog, we’ll discuss slip-on vs. plate flanges. Meaning of plate flanges Plate flange is a circular, flat disc welded to the pipe’s end. It enables the flange to be bolted to another pipe. It is often referred to as the flange slip, plane flange, flat flange, etc. Two plate flanges can be bolted together with a gasket in between them, usually used in water and fuel pipelines. The pipe length is not always known while constructing a pipeline. The plates may also be welded with a slight bias to the shaft, allowing the two pipes not to match up and join. Plate flanges come with a notched finish on the inner mating surface that allows the plate to fit within the gasket material. In any given dimension, plate flange designs are standardized, apart from the materials used to manufacture them. It ensures that the fit is exactly like a 6-inc
Read more

Use of Industrial Long Weld Neck Flanges

Image
Weld neck flanges are useful extensively for all types of pipe systems. However, industrial long weld neck flanges are taken as the best option when the pipes are transferring high-pressure or high-temperature fluids or fluids that fluctuate in temperature. It is true, especially in the gas and oil industry. How to choose long weld neck flanges? Industrial long weld neck flanges offer additional reinforcements which standard  weld neck flanges  do not offer. The long neck guides the pipe into the flanges, providing them with extra strength. The extra assurance helps ensure the structure, environment safety, and people when high-pressure and high-temperature fluids are involved. The structural reinforcement provided by an industrial long weld neck flange is crucial to the stability and safety of high-pressure industrial and commercial systems. How long do weld neck flanges help? There are a few uses of weld neck flanges: Large pipe networks Be it water main, gas main, or another type of
Read more