Ductile cast iron ball-shaped flexible expansion pipe "Flex Bender"

Infrastructure technology that protects lifelines - Seismic isolation joints

In 1980, Suiken developed the industry's first ductile cast iron ball-shaped flexible expansion joint, aiming to improve the safety of the most important joint parts for lifelines. The "Flexibender" has a large and flexible deformation absorption capacity in all directions, and it showed no damage during the 1989 San Francisco earthquake, the 1994 Los Angeles earthquake, and the 1995 Great Hanshin-Awaji Earthquake, protecting the pipeline from disconnection and damage, and demonstrating excellent "seismic isolation quality." For more details, please contact us or download the catalog.

Related Link - https://www.suiken.jp/category/fej/

basic information

**Main Features** - Can increase eccentricity and extension significantly → By combining a sleeve pipe with the basic structure of the ball section and double pipe, the eccentricity can be increased in 100mm increments. This allows for uniform and large performance in all directions. - Large bending angle → Each ball section can bend 15 degrees, allowing for a maximum bend of 30 degrees when bending in the same direction. - Capable of handling twisting → Even when twisting forces are applied to the piping, it can twist to relieve external forces. - Toughness and high corrosion resistance → Made of ductile cast iron, it has rigidity, and the inner surface and sliding parts of the packing are coated with epoxy resin powder, while the outer surface is coated with synthetic resin for excellent corrosion resistance. - Cross-sectional shape remains unchanged even when eccentric → Even at maximum eccentricity, there is no change in cross-sectional shape, maintaining a smooth flow. - Achieves cost reduction with ultimate simple design → Cost reduction is achieved through a rational design with a boltless and simple structure. - Improved workability with short spacing and hook holes - Maintains spacing during installation and transportation - Offers an extension-restraining type For more details, please contact us or download the catalog.