Flexible joint
Xt2-type joint
application field
Pressure and non-pressure pipelines for potable water, sewage and other infrastructure applications.
Suitable for belowground and aboveground installation where a flexible push-in socket joint is required. The XT2-type joint is used for standard ductile iron pipe installation and allows angular deflection within the specified dimensional limits.
Key Specs
| DN range: | DN80–2600 |
| Pressure class / PFA: | 40 bar (DN80–300) 30 bar (DN350–600) 25 bar (DN700–2600) |
| Deflection angle (θ): | 5° (DN80–300) 4° (DN350–500) 3° (DN600–800) 2° (DN900–1000) 1.8° (DN1200–2600) |
Sealing principle
The XT2-type joint is sealed by a rubber sealing ring positioned inside the socket.
When the spigot end is inserted into the socket, the sealing ring is compressed and creates contact pressure between the pipe, the gasket and the socket. This provides a watertight and flexible connection. Under operating pressure, the sealing effect is further enhanced, allowing the joint to act as a self-sealing connection.
Compared with the T-type joint, the XT2-type joint uses a modified socket and gasket geometry. This supports reliable sealing performance across a wider DN range and allows efficient installation.
joint features
The XT2-type joint is a flexible push-in socket joint designed for easy installation and reliable sealing performance.
It allows angular deflection and can therefore accommodate minor changes in direction as well as limited settlement of the subsoil. However, the joint is not axially restrained and does not transmit axial forces.
Therefore, thrust blocks or self-anchored joint systems are generally required at bends, end points or other locations subject to axial forces.
The XT2-type joint is suitable for larger diameters than the T-type joint and is available up to DN2600 according to the manufacturer’s dimensional tables.
Downloads
brochure
Technical Brochure
Complete overview of our ductile iron pipe range, joint types, coatings, technical parameters and application fields.