Large Diameter Sliplining

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Minimal disruption, maximum results.


Protect and maintain your community’s underground assets while protecting your finances with large diameter sliplining solutions from SAK. Ideal for interceptor pipeline in congested areas or difficult-to-dig sites, sliplining saves money and disruption by renewing sewer infrastructure using the existing pipeline. Working from access pits, new pipe is installed into deteriorating host pipe, providing a strong, new pipeline without the need to dig up and replace your entire system. 

A variety of pipe materials and installation methods can be used, allowing SAK to tailor the solution to your specific conditions. Typically, we excavate strategically located insertion pits and use hydraulic jacks to insert new, factory-made pipe into the host pipe. Section by section, we install the new pipe, often without the need for bypass pumping or diverting live flow. When all sections are installed, the annular space between the old and new pipes is grouted, securing the new pipeline in place. 

Sliplining is semi-trenchless, so it requires minimal excavation. Typically, the only digging needed is to create access pits at pipe insertion points or small shafts for reinstating lateral connections. While the process does slightly reduce pipeline diameter, sliplining is a cost-effective, minimally disruptive option for giving new life to aging pipeline. Is large diameter sliplining right for your community? The experienced team at SAK will help you make the call.