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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

Low reaction force expansion structure drawing
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.

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