Berolina-LP-Liner: Advantages
- Use in low-pressure range up to 2 bar operating pressure
- Seamless design
- Ready to lay
- Storable
- Fast curing
- Smooth surface
- Suitable for all profiles
- Bridging of cross-section shape and size change
Carrier material
Woven glass complex E-CR according to EN 14020-1, EN 14020-2 and EN 14020-3
Resins
Unsaturated polyester resins (UP resins) to DIN 18820-1, Table 1, Group 3, ISO-NPG to DIN 16946-2, Table 3, Type 1140
Technical data
Short-term ring stiffness (EN 1228)*: ≥ 10,000 N/mm²
Short-term modulus of elasticity in flexure (EN ISO 178)*: ≥ 8,700 N/mm²
Short-term flexural stress (EN ISO 178)*: ≥ 150 N/mm²
Reduction factor for long-term values (EN 761): A = 1.45
Long-term ring stiffness (EN 1228)*: ≥ 6,800 N/mm²
Long-term flexural stress (EN ISO 178)*: ≥ 105 N/mm²
Laminated construction: Multi-layer, seamless and overlapping in longitudinal direction. The overlaps are offset.
Elongation on calibrating: ~ 0.0%
Allowable diameter tolerances of the old pipes: DN ≤ 700: ± 5%
* Carrier laminate thickness to EN ISO 11296-4 (07/2011)
Datenblatt
Broschüre
Technical data
Carrier material
Woven glass complex E-CR according to EN 14020-1, EN 14020-2 and EN 14020-3
Resins
Unsaturated polyester resins (UP resins) to DIN 18820-1, Table 1, Group 3, ISO-NPG to DIN 16946-2, Table 3, Type 1140
Technical data
Short-term ring stiffness (EN 1228)*: ≥ 10,000 N/mm²
Short-term modulus of elasticity in flexure (EN ISO 178)*: ≥ 8,700 N/mm²
Short-term flexural stress (EN ISO 178)*: ≥ 150 N/mm²
Reduction factor for long-term values (EN 761): A = 1.45
Long-term ring stiffness (EN 1228)*: ≥ 6,800 N/mm²
Long-term flexural stress (EN ISO 178)*: ≥ 105 N/mm²
Laminated construction: Multi-layer, seamless and overlapping in longitudinal direction. The overlaps are offset.
Elongation on calibrating: ~ 0.0%
Allowable diameter tolerances of the old pipes: DN ≤ 700: ± 5%
* Carrier laminate thickness to EN ISO 11296-4 (07/2011)
Area of use (LP-Liner)
- Pressure pipes
- Test pressure ≤ 5 bar
- DN 150 – DN 700
Rehabilitation of pressure pipes
The Berolina-LP-Liner (LP stands for low pressure) is used in wastewater pressure pipes with a maximum test pressure of five bar. The use of high-strength glass and special arrangement of the glass sheets enables a maximum internal operating pressure of two bar.
Rehabilitation in confined spaces
The liner was modified and used for the low-pressure range under the name Berolina LP Liner in order to rehabilitate pressure pipes too. This liner was installed for the first time in 2008, in the Reuter CHP plant in West Berlin. The installation sequence differs from conventional rehabilitation methods due to the preparation and follow-up work. In wastewater pressure pipes, all sharp-edged deposits must be removed before the liner is pulled in. This is followed by pulling in a slip liner, the liner, calibration and UV light curing. The liner ends are joined onto the existing pipe by means of a flange joint. This method replaces the time-consuming replacement of pipe sections.
Area of use (LP-Liner)
- Pressure pipes
- Test pressure ≤ 5 bar
- DN 150 – DN 700
Rehabilitation of pressure pipes
The Berolina-LP-Liner (LP stands for low pressure) is used in wastewater pressure pipes with a maximum test pressure of five bar. The use of high-strength glass and special arrangement of the glass sheets enables a maximum internal operating pressure of two bar.
Rehabilitation in confined spaces
The liner was modified and used for the low-pressure range under the name Berolina LP Liner in order to rehabilitate pressure pipes too. This liner was installed for the first time in 2008, in the Reuter CHP plant in West Berlin. The installation sequence differs from conventional rehabilitation methods due to the preparation and follow-up work. In wastewater pressure pipes, all sharp-edged deposits must be removed before the liner is pulled in. This is followed by pulling in a slip liner, the liner, calibration and UV light curing. The liner ends are joined onto the existing pipe by means of a flange joint. This method replaces the time-consuming replacement of pipe sections.