Types of seismic isolation joints (rubber materials)
Features
- ①Reinforcing layers (synthetic fibers)
Because of the two-layer construction with bias in opposite directions, there are almost no changes in either the axial or radial directions - ②Filling material (embedded rubber)
The use of special high polymer rubber creates an internal flat structure suited to fluids such as sewage and those including particulates which tend to carry deposit sediment. - ③Arch structure
The external arch structure and damping effect distinctive to rubber maintain internal smoothness and can withstand repeated displacement, expansion, and contraction in any direction - ④Flange（JIS10K）
Standard flange materials are SS400, and can be changed to SUS304, 316 etc. - ⑤External surface rubber
- ⑥Internal surface rubber (internal flat structure)
The special synthetic rubber (high-performance rubber) used has been confirmed through a range of testing such as of tensile strength, hardness, creeping degradation over time, and fatigue to have sufficient durability and dependability. - ⑦Reinforcing ring
The use of flat reinforcing rings means there is no worry of breakage, detachment etc. of the flanges. - ⑧4 Bellows
| Mark/Number | Name | Material |
|---|---|---|
| （A） | 2 Bellows type | – |
| （B） | 4 Bellows type | – |
| ① | Reinforcing ring | SS 400 |
| ② | Flange | SS 400 |
| ③ | Filling material | Special high polymer rubber |
| ④ | Internal surface rubber | Synthetic fiber |
| ⑤ | External surface rubber | Synthetic fiber |
| ⑥ | Reinforcing cord | Synthetic rubber |
| Evaluation | Applicable lines | Operation system | Seismic isolation amount |
Maximum working pressure |
Maximum working temperature |
|---|---|---|---|---|---|
| 【Required performance】 Displacement tracking performance・・・◎ Durability・・・・・◎ Shape recovery performance・・・◎ Low reaction force・・・・○【Other characteristics】 Heat resistance・・・・・・△ Chemical resistance・・・・・△ Pressure resistance・・・・・・○ |
sewage ・Grey water Rain water・Ventilation |
F system | amount of 800mm |
0.3MPa or less※ |
-20~70℃ |
| Water supply sewage Grey water Rain water Ventilation Hot and cold water Warm water Cold water Other |
C system | 1.0MPa or less |
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| H system | 0.3MPa or leadd |
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| V syatem | 1.0MPa or less |
Please specify in advance if you would like products registered with the Japan Water Works Association.
※Indicates the maximum working pressure for pumping‐up waste water.
●Please contact us regarding seismic isolation amounts exceeding 800mm
