SAERTEX-LINER® MULTI | SAERTEX multiCom

SAERTEX-LINER® MULTI is an efficient, cost-effective solution that offers industry leading performance. Three design options make this GRP pipe liner the timesaving, flexible and sustainable choice when it comes to the trenchless rehabilitation of municipal wastewater pipes and pressure lines.

Type S+: strong mechanical properties for numerous applications
Type S+ XR: suitable for pressure lines up to 33 bar

Benefits

Installation efficient liner construction

The SAERTEX-LINER® MULTI features a high-strength design that allows for thinner wall thicknesses, resulting in reduced weight, can withstand higher pulling forces, and faster curing times for more economical installations. Its robust outer foil provides additional durability during installation. The “FastPlus” option features a non-removable inner foil, which reduces installation times.

Technical service life of ≥70 years

The ECR fiberglass core fabric, utilizing multiaxial in-house fabric technology, is designed to withstand high mechanical stresses. It boasts a leading retention factor of 80% after 20,000 hours, according to DIN EN 761 and ASTM D2990.

Gliding and UV light protection foil

Our standard outer foil for all liners offers gliding capabilities and UV light protection for liner diameters up to DN 600 (24 inches) and a maximum weight of 2.5 tons. This eliminates the need for a separate glide foil, saving both time and costs within these specifications.

SAERTEX-LINER CO2-optimized

The climate-friendly manufacturing process for our UP resin systems saves an average of 250,000 kg CO₂per quarter. On request, we can provide you with a certificate showing the CO₂ savings achieved by your projects.

Variants

Product range	SAERTEX-LINER^®MULTI
Utilization	municipal wastewater and stormwater
Resin type	UP
Temperature and media resistance	+
Styrene free?	no

Design	Typ S+		Typ S+ XR	Typ E ≤ DN 200	Type E > DN 200
Host pipe profile	Various	Circular	Circular	Circular	Circular
Application	Gravity	Pressure	Pressure	Gravity	Gravity
Operating Pressure [bar]		up to 1	up to 33
Fully statically loadable*	•	•	•	•	•
DN [mm]	150–1,600	250–1,200	250–1,200	200–600	200–600
Composite wall thickness [mm]	3–15	4–12	4.3-12.3	3-6	3-6

Foils
Outer foils:
- Integrated gliding and UV light protection foil	•	•	•	•	•
- Permanent foil with barrier function Inner	•	•	•	•	•
Inner foil with barrier function:
- Standard (temporary)	•			•	•
- FastPlus (semi-permanent)**	Selectable
- Pressure (permanent)		•	•

Mechanical Characteristics
Short-term circumferential E modulus [N/mm²]	≥ 20,500			≥ 8,200	≥ 15,700
Long-term circumferential E modulus [N/mm²]	16,000			5,942	11,893
Short-term bending E modulus [N/mm²]	≥ 16,800			≥ 8,500	≥ 13,750
Short-term bending stress [N/mm²]	≥ 270			≥ 273	≥ 152
Long-term bending stress [N/mm²]	210			197	115
Reduction factor according to DIN EN 761:
- 50 years [after 10,000 hours]	1.28			1.38	1.32
- 100 years [after 20,000 hours]	1.31

*Structural classification for pressure applications | Class A DIN EN ISO 11295 // Class IV AWWA M28

**FastPlus available for DN 200 to DN 1500 max WD 12 mm

Additional time savings: "FastPlus" option

The FastPlus liner features an integrated inner coating that stays in place after curing, enhancing its installation efficiency. This design also allows for easier introduction of the UV light source, even in challenging installation conditions.

Certified by Independent Organizations.

DIBt Approval: Z-42.3-350
CSTB: DTA 17/16-31
WRc: PT/458/0620
Others on request

For any additional information or specific inquiries, please do not hesitate to contact us.