Lapped Flange

A lapped flange is a type of flange connection used in piping systems where two flanges are joined together with a gasket in between, creating a reliable seal. It consists of two separate pieces: a flat flange and a raised flange, which are designed to overlap each other when joined. This design allows for a higher tolerance for misalignment and provides a strong, leak-resistant seal, especially in systems dealing with high-pressure or high-temperature environments. Lapped flanges are often used in industries like oil and gas, petrochemical, and water treatment, where ease of maintenance, leak prevention, and secure connections are critical.

Our Lapped Flanges are meticulously engineered for superior sealing performance in demanding industrial applications. Constructed from high-grade materials such as stainless steel, carbon steel, and alloy steel, these flanges offer excellent resistance to corrosion and thermal expansion. The unique overlapping design ensures a tight, leak-proof connection, even under high-pressure and high-temperature conditions. With easy installation and the ability to accommodate slight misalignments, our lapped flanges are ideal for use in systems where precision and reliability are crucial. Whether in piping networks, chemical plants, or power stations, our lapped flanges provide a robust and cost-effective solution for ensuring secure, long-lasting connections.

Our Lapped Flanges are widely used in various industries where reliable, leak-proof connections are essential. These flanges are commonly applied in high-pressure and high-temperature piping systems, such as in oil and gas pipelines, petrochemical plants, and chemical processing industries. Their unique design makes them ideal for situations where slight misalignments might occur, ensuring a tight seal even in challenging conditions. Lapped flanges are also frequently used in water treatment facilities, power plants, and HVAC systems, where durability and secure fittings are critical for maintaining system efficiency and safety. Thanks to their versatility and ease of maintenance, these flanges provide a trusted solution for preventing leaks and ensuring long-lasting, efficient performance across various industrial applications.

What is a lapped flange?

A lapped flange is a type of flange used in piping systems to create a strong, leak-proof connection between two pipes or components. It consists of two flanges that are designed to overlap each other, typically with one flange having a raised face and the other being flat. The overlap helps to create a tighter seal when the flanges are bolted together, which is particularly beneficial in systems that need to maintain pressure or resist leakage. A gasket is placed between the two flanges to ensure an effective seal.

Lapped flanges are commonly used in high-pressure, high-temperature, or corrosive environments where reliability is crucial. They are also designed to accommodate slight misalignments, making them versatile in various industrial applications, such as in the oil and gas, chemical processing, water treatment, and power generation industries.

Lapped flange types

Concentric Lapped Flange

This type of lapped flange has a centered alignment, with the flange faces being concentric. It is used in systems where precise alignment is essential, ensuring that the flow of fluid or gas is uniform. This type is commonly used in high-pressure systems and applications where a smooth and consistent seal is required.

Eccentric Lapped Flange

In an eccentric lapped flange, the flange faces are offset, meaning the center of the raised face does not align with the center of the pipe. This design helps in applications where a uniform flow of fluid is important, such as in systems that carry slurries or liquids with varying flow characteristics. The eccentric design also helps avoid air pockets and uneven flow in certain setups, making it ideal for specific piping arrangements where misalignments are common.