ASME B16.5 Loose Flanges
Loose Flanges are used with a corresponding stub-end that “inserts” in the inside of the flange. The main benefit of this type of flange, is that once the pipe welds to the insert stub-end, the flange then can rotate for easier alignment of the bolting holes.
Flange can be divided into five basic types according to the way of connection with the pipe: flat welding flange, butt welding flange, thread flange, socket welding flange, loose flange. There are many types of flange sealing surfaces. Generally, there are protruding surface (RF), concave surface (FM), convex surface (M), tantalum surface (T), groove surface (G), full plane (FF), and ring connection. Face (RJ).
The loose flange is actually equivalent to the combination of two flanges, as shown in the figure:
Beijing Metleader Pipeline Technology INC.specializes in manufacturing high pressure, large diameter, high yield, and specialty flanges. ASME B16.5 Loose Flanges are manufactured using superior grade of steel like Carbon Steel, Alloy Steel, Stainless Steel 201/202, 304/304L, 310S, 316/316L, 317L, 321/321H, 347/347H, 904L. These Flanges are most durable and manufactures to fit in different size of Pipes. The majority of our flanges are manufactured from forged steel with a limited amount machined from bar stock. The forged construction provides higher strength and durability to provide long lasting performance in the application.
Often used as a connection is a change in material
The loose flange is sleeved on the pipe end by using a flange, a steel ring, etc., and the flange can be moved on the pipe end. Steel rings or flanges are the sealing faces, and the flanges act to compress them. It can be seen that the loose flange is not in contact with the medium due to being blocked by the steel ring or the flange.
The loose flange is suitable for the connection and corrosion-resistant pipelines of non-ferrous metals such as steel and aluminum and stainless acid-resistant steel containers.
The loose flange is a movable flange. It is usually matched on the water supply and drainage fittings (the most common on the expansion joint). When the factory leaves the factory, there is a flange at each end of the expansion joint, which is directly related to the pipeline and equipment in the project. Connected by bolts.
It is the kind of flange with a looper. It is generally used on pipes, in which case the bolts can be rotated to rotate the pipes on both sides and then tightened. It is convenient to disassemble the pipe. Loose flanges are also called loop flanges.
The connection of the loose flange is actually achieved by welding, except that the flange is loosely attached to the attached component that has been welded to the pipe, and then the attachment component and the gasket are pressed by the connecting bolt to achieve sealing. The flange (ie the loose sleeve) itself does not touch the medium.
The attachment of the accessory to the tube is either flat or butt welded. The advantage of this flange connection is that the flange can be rotated. It is easy to align with the bolt holes and is easy to install on large diameter pipes. Loose flanges are also suitable for where the pipe needs to be disassembled frequently for cleaning or inspection, or where the flange bolt holes are aligned, only the flange needs to be rotated without having to rotate the pipe. When using this flange joint, the flange accessory material is the same as the pipe material; the flange material can be different from the pipe material, so it is more suitable for conveying corrosive media pipes and non-ferrous pipe systems to achieve as much cost as possible. The purpose of (such as stainless steel and non-ferrous metals).
The loose flange can be subdivided into the butt ring with the neck loose flange, the butt ring plate loose flange, the flat welded ring plate loose flange and the flanged ring loose flange. 4 kinds.
