State of Technology Report for Force Main Rehabilitation, Final ...

3.4.5.1 Adhesive-Backed Woven Hose Lining
Semi-Structural (Class II, III) Woven Hose Lining
Starline ® HPL-S
Karl Weiss Technologies, located in Berlin-Zehlendorf, Germany, has developed a complete line of CIPP
products for the gas, water, and wastewater industries. For natural gas applications, Karl Weiss has been
working with the Gas Technology Institute (GTI) to refine and test a new High Pressure Liner (HPL).
The Starline HPL-G liner was first installed in 2004 in the US. Karl Weiss reports that Battelle carried
out long-term tests demonstrating the suitability of the liner for gas pipes in the US. The hose liner, based
on an epoxy resin system, has been tested in accordance with the German standard DVGW VP 404,
which includes aging strength, fluid strength, sealing characteristics, peel strength, and creep strength
against internal pressure. The German Association of Gas and Water (DVGW - Deutsche Vereinigung
des Gas und Wassesfaches e.V.) has certified the liner for a maximum pressure of 430 psi (30 bar) with a
50 year lifetime, according to Karl Weiss. By modifying the liner coating, the HPL liner is also available
for drinking water transmission. Starline 1000 (see Figure 3-18) is the liner designated for drinking water
applications in Germany. It is available in diameters of 3 to 24 inches (75 to 600 mm). Although the
liner meets the German DVGW W270 Recommended Practice for
Drinking Water and the KTW recommendations of the Federal
Institute of Health (Bundesgesundheitsamt), the application for
NSF 61 certification has only been initiated with approval
expected in 2010. Starline 3000 UV is a liner that is designed to
be fully self-supporting, not dependent on the adhesion of the liner
to the host pipe. It is also UV-cured. Starline HPL-W and
Starline HPL-S are Karl Weiss’s equivalent to the high pressure
gas pipe, except these are designed for drinking water and
wastewater applications and in particular where long installation
Figure 3-18. Starline
lengths are needed.
® 1000
Structural (Class IV) Woven Hose Lining
Aqua-Pipe ®
Sanexen Environmental Services of Quebec, Canada, in conjunction with the National Research Council
(NRC) of Canada, developed the new structural hose liner Aqua-Pipe primarily for use in potable water
applications (Figure 3-19). Aqua-Pipe have both the BNQ Standard 3660-950 certification (Canada) and
NSF 61 certification for use in drinking water systems. The majority of early installations were in Eastern
Canada, principally Quebec Province, with a later introduction to the US in 2004. To date, over 800,000
feet (243,902 meters) of Aqua-Pipe has been installed in North America. Aqua-Pipe is composed of two
concentric, tubular, plain-weave polyester jackets with the inner
jacket bonded to a polyurethane elastomer. This watertight
tubular elastomer membrane is compatible with drinking water.
The polyester jackets are impregnated with epoxy resin on site
in refrigerated trucks. The Louisiana Tech University TTC has
been running tests on Aqua-Pipe for Sanexen. Based on this
testing, the physical properties of the Aqua-Pipe liner are
reported to be higher than the minimums in ASTM F1216
and/or F1743. The flexural modulus is 290,000 psi (20,000
bar). The flexural strength is 6,500 psi (448 bar) and the tensile
strength is 8,700 psi (600 bar). The tensile strength in particular
is nearly three times the ASTM minimums. The TTC has also
carried out a combination of creep tests (to obtain creep
Figure 3-19. Aqua-Pipe Construction
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