What Are Plastic Flange Covers?

Flange cover is a special protection accessory used to protect the flange connection part in industrial pipeline system, which plays an indispensable role in preventing corrosion, avoiding mechanical damage, and guaranteeing system cleanliness. The material of the pipe flange covers are usually low density polyethylene (LDPE), which can ensure the stable operation of the flange in complex working conditions through physical isolation and structural protection. Whether it's size or color, we have a customized service. Our flange covers are designed to provide a full range of protection for flanges, meeting the needs of all types of flanges.

Core Function of Plastic Flange Covers

Anti-corrosion

Our plumbing flange cover is made of low density polyethylene corrosion-resistant material, which can isolate acid and alkali, water vapor, dust and other media, avoiding flange surface rust or chemical erosion. Often used in chemical light corrosion pipeline, water treatment system pipeline, etc. Measured flange cover can make the flange corrosion rate reduced by 70%-80%.

Types of Plastic Flange Covers

As a tool to protect flanges from damage, corrosion and contamination during loading, unloading, transportation and storage, there are many types of flange covers to choose from. Below are the common types of plastic flange covers. If you don't find the type you need, you can contact us for more information.

1. Full Face Flange Cover

This type of flange cover is designed to cover the entire surface of the flange, and its firm fit helps to prevent damage and corrosion to the flange surface, especially during prolonged storage or outdoor transportation. Full flange covers are available in ASME, ANSI, DIN and other flange standards.

2. Push-in Plastic Flange Cover

Push-in flange covers are often used for quick and easy installation. It fits snugly over the flange and does not require fasteners to hold it in place. This type of plastic flange is often made of polyethylene or similar material. This material is characterized by its low weight, low cost and high economic efficiency. Push-on flange covers are very much in use in pipe manufacturing and distribution.

Structural Diversity

Plastic flange covers are available in a variety of types, with bolted seals sealing securely for long term open air protection, and snap-on tool-less installation for temporary or frequent disassembly scenarios. Fully encapsulated flange covers provide 360° protection against dust and water up to IP67.

Environmental Protection

Flange covers play an important role in protecting the surrounding ecosystem by effectively preventing the leakage of hazardous fluids into the soil, water or atmosphere. The use of plumbing flange cover is even more important in industries such as oil and gas, chemical processing and wastewater treatment. To a certain extent, the use of plastic pipe flange covers allows these industries to avoid environmental fines due to leakage.

Anti-Leakage

Plastic flange covers with bolt-on or snap-on sealing ring design, adhering to the flange contour (such as convex, flat, ring joint surface), effectively provides a protective barrier between the flange joint and the external environment, reducing the risk of leakage. As a sealing tool, the flange cover effectively avoids safety hazards associated with pipeline fluids, protecting personnel, equipment and the surrounding environment.

Mechanical Damage Protection

Snap-on flange cover can avoid scratches and deformation of flange sealing surface due to collision and friction during transportation, installation and maintenance. The plastic flange cover is designed with an R-angle to eliminate the risk of wear on sharp edges of the flange and protect the integrity of related equipment. The pipe flange cover acts as a barrier, maintaining the cleanliness and protection of the flange surface, and improving the overall reliability and service life of the equipment.

Application of Plastic Flange Cover

FAQ

3. Bolt Hole Flange Cover

Bolt hole flange Covers are primarily secured through the bolt holes of the flange using built-in plugs or ties. These plastic flange covers are designed to ensure a strong and secure connection. Bolt hole flange covers are ideal for high impact transportation environments. Customized models are also available.