Hachiken, Japan
Hachiken EL Low Reaction Force Expansion
Made in Japan
Manufacturer : Hachiken
Model : EL
Low reaction force expansion
The expansion has a low reaction force design, and the reaction force during displacement is smaller than the standard expansion (EA).
The Purpose
- Anti-vibration/sound insulation and absorption of misalignment of pipes made of low-strength materials such as PVC and FRP
Usage
- Connection of resin piping such as PVC
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* |
*Hot-dip galvanized flanges are standard.
Dimensions and performance table
* Please inquire separately about sizes from 550A to 1000A.
| Nominal diameter | A. | L. | Shrinkage | Stretch | Eccentricity | Maximum working pressure | Mass kg | |
| Internal pressure MPa | Negative pressure kPa | |||||||
| 50A | 51 | 150 | 15 | Ten | 20 | 0.50 | -40 | 4.2 |
| 65A | 64 | 150 | 15 | Ten | 20 | 0.50 | -40 | 5.9 |
| 80A | 76 | 150 | 15 | Ten | 20 | 0.50 | -40 | 6.1 |
| 100A | 102 | 150 | 20 | 15 | 30 | 0.50 | -40 | 7.3 |
| 125A | 127 | 150 | 20 | 15 | 30 | 0.50 | -40 | 11 |
| 150A | 152 | 200 | 20 | 20 | 30 | 0.50 | -40 | 15 |
| 200A | 203 | 200 | 20 | 20 | 30 | 0.50 | -40 | 18 |
| 250A | 254 | 200 | 25 | 25 | 30 | 0.50 | -40 | 26 |
| 300A | 305 | 200 | 25 | 25 | 30 | 0.25 | -30 | 30 |
| 350A | 350 | 250 | 25 | 25 | 30 | 0.25 | -30 | 40 |
| 400A | 400 | 250 | 25 | 25 | 30 | 0.25 | -30 | 54 |
| 450A | 450 | 250 | 25 | 25 | 30 | 0.25 | -30 | 68 |
| 500A | 500 | 250 | 25 | 25 | 30 | 0.25 | -30 | 77 |
※1. Please use standard expansion (EA) for 40A or less.
※2. Each displacement amount is the value when each is displaced independently.
※3. Weight is a guideline.
Option
* If this product is made into a rubber embedded specification (solid), the reaction force will increase significantly.
| 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 |
*Please inquire separately about 2 or 3 ridges.
<Caution>
Since this product has a larger thrust force when pressurized than general joints, if it is used for pipes with low strength such as those made of resin, the pipes may be damaged due to elongation. The use of safety bolts) is particularly strongly recommended.
<Remarks/Precautions>
- Please note that the maximum working pressure is lower than Expansion (EA).
- If necessary, use the control unit ( here ).
- Not manufactured for burying.
- 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.
