Expansion joints refer to pipeline compensation joints, which are new products for connecting pumps, valves, pipelines and other equipment to the pipeline. They are connected by bolts to make them into a whole with a certain displacement. They are divided into AY type gland type Expansion joint, AF flange type loose sleeve expansion joint, BF type single flange limit expansion joint, B2F type double flange limit expansion joint, BY type gland loose sleeve limit expansion joint, CF single flange transmission force Joints, C2F double flange power transmission joints, etc.

Definition

　　Expansion joints are mainly used in installation and maintenance, adjusted according to the installation size on site, and can transmit the axial thrust back to the entire pipeline system during work. This not only improves work efficiency, but also protects pipeline equipment such as pumps and valves.

Product category

　　AY type gland type expansion joint, AF type flange type loose sleeve expansion joint, BF type single flange limit expansion joint, B2F type double flange limit expansion joint, BY type gland loose sleeve limit expansion joint, CF Single flange power transmission joint, C2F double flange power transmission joint, etc.

　　AY type gland loose sleeve expansion joint is a loose sleeve connection pipe device composed of a body, a sealing ring and a compression component. It is mainly used for compensating joints that absorb displacement but cannot bear pressure thrust.

　　BF type single flange limit expansion joint is composed of loose sleeve expansion joints and limit short pipes. It can prevent the pipeline from leaking or damage to the compensation joint due to excessive displacement. It is mainly used for loose sleeve connection of pipelines that absorb axial displacement and bear pressure thrust within the allowable displacement range. It is suitable for connecting with flanges and welding with pipelines. , When installing, adjust the installation length between the two ends of the product and the pipe or flange, tighten the gland bolts diagonally and evenly, and then adjust the limit nut, so that the pipe can be freely expanded and contracted within the range of expansion and contraction, and the expansion and contraction can be locked. Ensure the safe operation of the pipeline.

　　B2F type double flange type limit expansion joint is suitable for flange connection on both sides.

　　The AF type flange loose sleeve expansion joint is a loose sleeve connection pipeline device composed of a body, a sealing ring and a compression component. It is mainly used for compensating joints that absorb displacement but cannot bear pressure thrust. Working principle: After the loose sleeve expansion joint is installed on the pipeline, tighten the elastic sealing ring of the nut, and rely on the mutual inclination under the action of the nut gland to press tightly on the outer ring of the pipe to seal and connect. When the temperature changes, the pipe can expand and contract freely in the middle of the joint, the foundation sinks, the pipe can be deflected, and the sealing is ensured without leakage, so as to achieve the purpose of automatic compensation.

　　CF type single flange type power transmission joint is composed of body, sealing ring, gland and short pipe flange components. It is suitable for connecting with flanges and welding with pipes at the same time. Installation is to adjust the installation length between the two ends of the product and the pipe or flange. After installation and welding, tighten the gland bolts diagonally at a time to combine them into one, and have a certain displacement, which is convenient for installation and maintenance, according to the site size Make adjustments. It can transmit the axial thrust to the entire pipeline during work.

Installation Notes

　　Folding flange type: After the loose sleeve expansion joint is installed on the pipe, tighten the elastic sealing ring of the nut. Under the action of the nut gland, it is inclined to each other and pressed tightly on the outer ring of the pipe for sealing and connection. When the temperature changes, the pipe can expand and contract freely in the middle of the joint, the foundation sinks, the pipe can be deflected, and the sealing is ensured without leakage, thereby achieving the purpose of automatic compensation.

　　Single flange limit: suitable for connecting with flanges and welding with pipes at the same time. During installation, adjust the installation length between the two ends of the product and the pipe or flange, tighten the gland bolts diagonally, and adjust the nuts. Allow the pipeline to expand and contract freely within the scope of the expansion, lock the expansion, and ensure the safe operation of the pipeline.

　　Folding double flange limit: suitable for connecting both sides with flanges. Adjust the connection length of the product at both ends during installation. Tighten the gland bolts diagonally and evenly in turn, and then adjust the limit nut, so that the pipeline can be freely stretched and locked The amount of expansion and contraction ensures the safe operation of the pipeline.

　　Folding gland type: suitable for connecting both sides with the pipe, no welding is required, reasonable structure, sealing, quick and convenient installation.