Nu Flow's Small Diameter Re-Line System can re-line complete inside

infrastructure systems. By using Nu Flow's tools, technicians can reinstate lined laterals. Branch lines can then be lined to the stack quickly and easily. Nu Flow's small diameter pipe lining gives you the benefit of being able to line complete systems right from the 3" (65mm) or 4" (80mm) stack down to the 1.0" (25mm) branch lines.

 

 

Nu Flow's Lateral Lining System is used to remotely repair full sections of damaged pipe or even sections anywhere in the lateral.  Nu Flow's lateral lining products allow technicians to remotely fix damaged pipe anywhere in the line. Our products are user friendly and easy to install. All of our products can be installed via the clean out.

 

 

Nu Flow's technology can line from 4" (80mm) to 6" (150 mm) pipe in one operation.  Nu Flow's patented expandable material gives installers the capability to change diameter sizes any where in the line. Our change of diameter tube gives you a full strength liner in both sizes without compromising the integrity of the pipe.

 

 

Nu Flow engineered two liner solutions to specifically handle straight pipes as well as pipes with multiple bends and elbows in both large and smaller diameter pipe systems.  Between the two technologies, Nu Flow offers complete no-dig installation through existing cleanouts.  Nu Flow technologies repair all kinds of pipelines from cast iron to orangeburg.  The liners seal to the host pipe with no annular space.  Among the many features, Nu Flow's technology handles corrosive environments, repairs around 90 degree bends and spans void pipe sections, all without creeping or shrinkage.  This technology is also able to handle any transitions in pipe diameter such as 3-4" (65mm-80mm) and 4-6" (80mm-150mm) transitions in one application.

 

 

All of Nu Flow's lateral rehabilitation techniques can be launched through cleanouts. These patented techniques keep digging to a minimum which saves money. Nu Flow's systems can also start and stop anywhere in the line which again can save significant money while enabling technicians to fix problems anywhere in the line at any length.

 

 

Millions of linear feet of cured in place materials have been installed worldwide. They have withstood every corrosive environment plus the test of time. Billions of dollars have been saved because excavation was eliminated.

 

Cured in place materials mold to the host pipe. This seamless pipe prevents infiltration and exfiltration, restores structural integrity, eliminates joints that can weaken and allow root intrusion. Cured in place pipe actually increases flow capacity because the Nu Flow pipe is much smoother than old clay and concrete pipe. Above ground there are no piles of excavated dirt…no traffic tie-ups…no subcontractors and a happy customer.

 

Nu Flow Technology has the experience and technical knowledge to specify the right thickness and right resins to meet your specific needs regardless how deep the pipe or how corrosive the environment.

 

Resin formulas are custom specified to meet your specialized requirements…structural strength enhances structural strength of host pipe and acts as a stand-alone pipe meeting or exceeding test results using ASTM D790 as our benchmark.

 

 

The main alternative to traditional sewer replacement involving trenching is cured-in-place lining, sometimes referred to as 'soft lining' or 'cured-in-place-pipe' (CIPP), which has dominated the non-man-entry sewer renovation market in many countries for over twenty years. For brevity, these Guidelines refer to all cured-in-place lining techniques as CIPP systems, although it should be noted that not all providers of such systems use this term.

 

Although several competitive systems are now available, the common feature is the use of a fabric tube impregnated with polyester or epoxy resin. The tube is inserted into the existing pipeline and inflated against the pipe wall, then cured either at ambient temperature or by re-circulating hot water or steam. Some variations use ultra-violet light to cure the resin.

 

CIPP systems create a close-fit 'pipe-within-a-pipe' which has quantifiable structural strength and can be designed to suit various loading conditions. The ring-stiffness of the liner is enhanced by the restraint provided by the host pipe and the surrounding ground, but systems designed for gravity pipelines do not rely on a bond between the liner and the substrate. Systems which rely on the host pipe for some measure of structural support are sometimes known as 'interactive lining' techniques.

 

As well as minimizing bore reduction, an inherent advantage of cured-in-place liners is their ability to conform to almost any shape of pipe, making them suitable for relining non-circular cross-sections. Provided that the liner perimeter has been correctly measured and that the material does not shrink significantly during cure, a close-fit liner should result. Their main limitation is the wall thickness, and hence the quantity, weight and cost of material, which may be required for larger sizes or for severe loading conditions, particularly in non-circular pipes.

 

Laterals can be re-opened remotely after lining, but care must be taken during installation to ensure that surplus resin does not enter branches. CIPP systems are also available for lining laterals from within the main pipe.

 

The major disadvantage of CIPP lining systems is the need to take the host pipe out of service during installation and cure. In gravity pipes, where flows are very low, it may be possible to plug any incoming pipes and to rely on the storage within the system. In other cases flow diversion or over-pumping will generally be required. One way to overcome service intervention is with flow through plugs.

 

 

Because liner specifications and design procedures vary from country to country and are subject to periodic amendment, it is outside the scope of these Guidelines to include reference to all national standards.

 

In countries where established local criteria do not exist, a widely-used standard is the Specification for Renovation of Gravity Sewers by Lining with Cured-in-Place Pipes contained in WIS 4-34-04, March 1995: Issue 2, published by WRc in the UK. Design procedures for determining the required wall thickness of circular and non-circular sections under different loading conditions are given in the WRc Sewerage Rehabilitation Manual.

 

Specifications for pressure (gas and water) applications are laid down by the relevant utility companies and approvals bodies. Most countries have strict requirements and accreditation procedures for all materials likely to come into contact with potable water.