SPR™EX Machine Wound Spiral Liner

150 mm – 1050 mm Pipe Lining

Close-Fit Lining

100% Trenchless

Expanding Close-Fit Liner

SPR™EX is a Machine Wound Spiral Lining (MWSL) method for small diameter sewers, storm drains and culverts. SPR™EX is a close-fit liner and does not require annular space grouting. SPR™ EX liners can structurally rehabilitate brick, concrete, glass reinforced plastic or corrugated metal sewer and stormwater pipelines with diameters from 150 mm to 1050 mm. SPR™EX is WRc Approved (PT/305/0710).

SPR™EX MWSL Process

SPR™EX Lining Process

The MWSL is initially wound at a fixed diameter smaller than the host pipe. This is done so the liner can negotiate offsets and other host pipe defects without restriction. SPR™EX liners are typically installed from the downstream to the upstream manhole however reverse set-ups are possible.

Once the SPR™EX liner reaches the upstream manhole, the liner is torsionally restrained. The expansion process begins when the wire positioned between the primary and secondary (or sacrificial lock) is retracted, severing the secondary lock. This allows for successive wraps of PVC profile to expand, creating a customized tight fit liner against the inside of the host pipe. As the wire is pulled, the liner continues to expand. The operator will  feed additional profile into the host pipe until the entire pipe segment is a close-fit.

SPR™EX Machine Wound Spiral Lining

150 mm - 1050 mm

Close-Fit Lining

100% Trenchless

Expanding Close-Fit Liner

SPR™EX is a Machine Wound Spiral Lining (MWSL) method for small diameter sewers, storm drains and culverts. SPR™EX is a close-fit liner and does not require annular space grouting. SPR™ EX liners can structurally rehabilitate brick, concrete, glass reinforced plastic or corrugated metal sewer and stormwater pipelines with diameters from 150 mm to 1050 mm. SPR™EX is WRc Approved (PT/305/0710).

Sewer Pipe Lining

Storm Drain Lining

Culvert Lining

Trenchless Lining Methods

Machine Wound Spiral Lining methods based upon your application.

150 mm - 1050 mm

Expanding tight-fit PVC liner 

600 mm - 3000 mm

Steel-reinforced PVC liner

900 mm - 3000 mm

Steel-reinforced HDPE liner

800 mm - 5500 mm

PVC round/non-round liner

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