Hachiken, Japan
Hachiken EA Expansion
Made in Japan
Manufacturer : Hachiken
Model : EA
Expansion
A multi-purpose rubber joint that absorbs expansion/contraction and eccentricity due to the temperature of the piping due to the arch structure of the main body.
Feature
- A large amount of displacement can be obtained by the arch structure of the main body.
- Installation in piping is particularly easy due to the small axial reaction force.
Kinds
- EA1: 1 arch type (for internal pressure/negative pressure)
- EA2: 2 arch type (for internal pressure/negative pressure)
Usage
- Chemical plant
- Pump/blower piping
- Flue gas desulfurization plant
- Ship piping
- Sewage treatment plant
- General factory equipment piping
Standard specifications
- Maximum operating temperature : -10 to 60°C
- Maximum working pressure : See performance table
- Flange standard : JIS 10K
- Inner rubber material : EPDM
Structure and material
| Part number | Name | Material |
| 1 | Inner rubber | EPDM |
| 2 | Reinforcing layer | Synthetic fiber |
| 3 | Body reinforcement layer | Steel wire or Synthetic fiber |
| 4 | External rubber | EPDM |
| 5 | Flange | SS* |
| 6 | Reinforcement ring | SS |
* Hot-dip galvanized flanges are standard for ground and negative pressure applications, and hot-dip galvanized + black epoxy resin paint is standard for underground applications.
Dimensions and performance table
※1. All 40A and below are solid type arches. Click here for solid type arch (arch filling rubber) .
※2. For solid type arches, multiply the values in the table above by 0.5 for shrinkage and 0.6 for elongation.
(The amount of eccentricity does not change. However, for 40A or less, the values are as shown in the table.)
※3. Each displacement amount is the value when each is displaced independently.
※4. If the negative pressure in the above table is exceeded, please use the optional “for negative pressure”.
※5. Displacement for slanted piping differs from the above values, so please contact us each time.
※6. Mass is a guideline.
※7. The inner diameter of the mouth of 25A or less is R-processed.
Option
| Standard | Option | |
| Flange standard | JIS 10K | Tap water F12, JIS 5K, JPI class 150, etc. |
| Flange material | SS plating | SUS304, SUS316, etc. |
| Inner rubber material | EPDM | CR, NBR, NR, wear resistant |
| Arch structure | Cavity | Solid |
| Body structure | For internal pressure | For Negative Pressure/Embedded |
<Remarks/Precautions>
- If necessary, use the control unit ( here ).
- If the fluid is gas, the maximum working pressure will be 1/2 of the above value.
- Please contact us for non-standard specifications (diameter, length, etc.).
- Due to the manufacturing method, the plating on the flange may be discolored or mottled, but this does not affect performance.
Related Products
REQUEST QUOTATION
PAYMENT
LINK
