Jet grouting systems consist of injection pumps operating at pressures of 400–600 bar and above, special valve groups, and precision ground elements. The parts used in these systems:
- Cannot be substituted with standard dimensions
- Have micron-level tolerances
- Create serious safety risks if operated with incorrect parts
For this reason, ground elements that are fully compatible with the specific brand and model must be used in Metax and Tecniwell systems.
This product group generally includes the following components:
- High-pressure injection line connection elements
- Jet nozzles and nozzle holders
- Pump outlet adapters
- Wear-resistant ground contact elements
- Pressure sealing surfaces
These parts ensure homogeneous, controlled, and loss-free injection flow.
In Metax and Tecniwell systems, part compatibility is not limited to dimensions alone. The following technical criteria must be fully met:
- Pressure class compatibility (PN rating)
- Material hardness and wear resistance
- Internal surface geometry
- Connection angle and sealing surface tolerance
For example, specific series nozzle elements used in Tecniwell high-pressure injection pumps operate in full compatibility only with the relevant pump model and serial number. An incompatible part disrupts injection balance and directly affects column quality.
In jet grouting equipment, there is no concept of a “similar” part. Matching part numbers and models is mandatory for system safety.
Incorrect part usage may cause:
- Pressure loss
- Nozzle breakage
- Cracking of the pump housing
- Irregularities in the injection column
Therefore, ground element procurement must be based strictly on part numbers.
Maintenance processes in Metax and Tecniwell pumps are more sensitive compared to conventional hydraulic systems. During part replacement:
- Wear measurements must be performed
- Nozzle and housing tolerances must be checked
- Sealing surfaces must be renewed
- Parts must be selected according to manufacturer compatibility criteria
Otherwise, the newly installed part may fail again in a short time.
In jet grouting projects, the margin for error is low. A single pump failure can lead to:
- Interruption of the injection process
- Loss of column integrity
- Technical rejection of the project
For this reason, Metax & Tecniwell ground elements should be considered not merely as spare parts, but as integral components of project safety.
For companies operating in the field of ground improvement, the core principles are clear:
- No parts without guaranteed compatibility are used
- No installation is performed without part number verification
- No system is commissioned without confirming the pressure class
This discipline protects both site safety and overall project quality.
