The Significance of Flange Protective Covers in Various Applications
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The Significance of Flange Protective Covers in Various Applications

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 The Significance of Flange Protective Covers in Various Applications


Flange protective covers play a crucial role in a wide range of applications, ensuring the safety and integrity of flange connections. These covers are designed to shield flanges from external elements, preventing damage and enhancing the overall performance of industrial systems. In this article, we will explore the importance of flange protective covers and their primary applications.


Why do we need a shield:


The nature of the working fluid may cause clogging of the pipe and require regular cleaning of the pipe. Therefore, during the installation process, the pipes are connected using flanges.

A flange is a plate or ring that forms an edge at the end of a pipe. They can be secured to other pipe flange devices using nuts and bolts. If they are not properly tightened, it means there is a gap through which part of the fluid may flow out of the system.

It is not enough to tighten the flange by inserting a washer, because whether the fluid can be moved out of the system depends on the size of the flowing fluid molecules and the weight and speed at which the fluid moves through the pipe.

Gases whose molecular size is smaller than the gap will certainly escape slowly from the system, and if heavy lquids are flowing at a faster rate, they tend to exert shear forces on the flange.

There are many types of fluids handled in industry. These may or may not be harmful to people, the environment or property.

If it is assumed that flammable, volatile, toxic, or corrosive fluids are being handled, the expected systems need to be adequately protected so that they do not leak and cause harm, or at least can be detected to cause harm before they reach a certain location.

Flange shields are used to provide an additional level of protection to ensure safety during plant operation.

Flange connection leakage diagram



The main application range of the shield:



  • Oil or flammable liquid lines near hot surfaces: Oil is inherently volatile. That means it's easy to evaporate. If the heat source is located near the pipeline, the evaporation rate will also increase. This means that the tendency to spew out will also increase.


  • Acid lines near workers, operators and engineers: Accidents from these lines can seriously damage the physical and mental health of those affected. It can even be fatal.


  • High pipe: Should be properly shielded, because once a leak starts, it takes time to reach and repair the pipe.


  • Lines near loading/unloading areas: Fluids may affect loading or unloading materials. This is also important for the safety of the people who butt the material.



They are very useful when dealing with oil or flammable liquids. Flanged shields are particularly suitable for the steam and oil and gas industries. The flange guard can be easily attached to the flange. Some varieties can detect leaks. They are particularly useful in the acid industry. They work in the same way as pH indicator litmus paper. If a leak occurs and liquid spills onto the flange guard, their color will change. Flange shields can be made of metal or non-metal materials. Metal flanged shields for high pressure and high temperature applications. Non-metal flanged shields are used where the fluid being transported is corrosive.

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