Flexible Expansion Joints

Since its launch in 1980, our unique seismic isolation technology has protected pipelines, including the “SUPER FLEX,” which has demonstrated superior seismic quality in numerous major earthquakes both domestically and internationally, and the force-balanced joint “MenshinBender,” developed for building service pipelines of seismic isolation structures. We also offer solutions for drainage pipes, communication cables, and more.

SUPER FLEX

Flexible Expansion Joints

In 1980, Suiken aimed to improve the most important safety of joints in lifelines and developed the industry’s first ductile cast iron ball-type flexible expansion joint. The “SUPER FLEX” offers substantial deformation absorption capabilities in all directions, with over 110,000 units in use. It has demonstrated excellent seismic quality by protecting pipelines from separation and damage during major earthquakes, including the San Francisco earthquake (1989), the Los Angeles earthquake (1994), and the Great Hanshin-Awaji Earthquake (1995) and others.

Menshin Bender

Flexible Expansion Joints

“Menshin Bender” is the joint developed for earthquake mitigation building services to adapt large-scale horizontal displacement. The force-balanced type of “MB-MK” incorporates a pressure-balancing structure to suppress the generation of thrust due to internal pressure and greatly reduce thrust fixation.

VP Bender (for drainage)

Flexible Expansion Joints

“VP Bender” is a flexible expansion joint for drainage pipelines that smoothly adapts to twisting, bending, and settlement caused by earthquake and ground subsidence. Installed at the connections of structures such as buildings or factories, it flexibly absorbs complex loads applied to drainage pipelines and safely protects the pipelines.

Applicable size:DN50-200mm

Flex-Jointer

Flexible Expansion Joints

“Flex-Jointer” is a flexible expansion joint for earthquake resistance pipelines for optical fiber cables or communication cables.

Applicable size:DN50-100 mm
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