
KP Series
- DW
- GZ
- TE
- DN 32 to 300
- 25 bar
- L 130mm
- Self-stabilizing
Thanks to its self-stabilizing design, the KP series exerts no stress on the piping at its equilibrium length, even at 25 bar. Simplify your support calculations and eliminate the need for tie rods.

Table of Dimensions and Mechanical Performance
The series covers a wide range of drilling diameters and templates. Displacement capacities are detailed in the table below.
Technical Specifications - Dilatoflex® KP
Maximum permissible displacements (maximum values do not apply simultaneously)
| DN | Nominal diameter | Nominal length Ln (mm) | Class 150 (PN20) | PN 25 | Maximum operating pressure (bar) | Vacuum ring required if vacuum greater than | Axial Compression Ln-Lc (mm) | Axial Elongation Le-Ln (mm) | Lateral Shearing R (mm) | Angular Angle α° (degree) | Approximate mass (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 32 | 1 1/4 | 130 | X | - | 25 | - | 20 | 10 | 10 | 15 | 3 |
| 40 | 1 1/2 | 130 | X | X | 25 | - | 20 | 10 | 10 | 15 | 3.4 |
| 50 | 2 | 130 | X | X | 25 | 30% | 20 | 10 | 10 | 15 | 4 |
| 65 | 2 1/2 | 130 | X | X | 25 | 30% | 20 | 10 | 10 | 15 | 4.7 |
| 80 | 3 | 130 | X | X | 25 | 30% | 20 | 10 | 10 | 12 | 5 |
| 100 | 4 | 130 | X | X | 25 | 30% | 20 | 10 | 10 | 9 | 6.2 |
| 125 | 5 | 130 | X | X | 25 | 30% | 20 | 15 | 15 | 9 | 7.7 |
| 150 | 6 | 130 | X | X | 25 | 30% | 15 | 15 | 10 | 5 | 10 |
| 200 | 8 | 130 | X | X | 25 | 30% | 15 | 20 | 15 | 5 | 12.2 |
| 250 | 10 | 130 | X | X | 25 | 30% | 10 | 20 | 10 | 4 | 16.7 |
| 300 | 12 | 130 | X | X | 25 | 30% | 10 | 20 | 10 | 4 | 20 |
Notes:
(1) Within the limit of the nominal pressure of the connection template used
(2) Standard counter flanges in bichromated zinc-plated steel, galvanized steel or 304L stainless steel
Tube quality and operating temperatures
The choice of grade must take into account both the nature of the fluid in contact and the operating temperature conditions. The following grades provide an overview of the compatibilities between different industrial fluids at both positive and negative temperatures.

Need technical assistance?
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Frequently Asked Questions
The Dilatoflex® KP range covers applications with operating pressures ranging from 16 to 25 bar.
Absolutely! The Dilatoflex® KP expansion joint is self-stable. Installed at its self-stability length, the expansion joint exerts no force on the piping, provided it is not compressed, and it does not require stabilizing tie rods.
