FAQs

Does your two-part epoxy system form a sleeve within the pipe, or does it bond with the earthenware pipe, seeping into the pores?

It does both! The epoxy forms a continuous sleeve of significant structural strength, allowing it to bond with the host pipe.

What is the life expectancy of the material?

The life expectancy is 40 years, plus we pride ourselves on our 10-year product and installation guarantee.

What sorts of Polymer products are used? – In simple language

The resins used within the Nu Flow process are a combination of patented epoxy formula, which varies according to the application of the pipe to be relined. They are classified as non-toxic chemicals for transportation by the IATA (International Air Transport Authority.) The patented mixture of these produces heat, as is normal when these two items are mixed. They are considered non-toxic and emit no odour.

What are the ‘properties’ of the products?

The flexibility of the product has been tested as per the test data 314-2003 by Trenchless Design. In simpler terms, the tests advised that the lining could withstand a pressure of 97.0kPa, which is considered flexible. This allows it to accept a degree of movement that is heavily favoured for modern pipe systems. When placed inside an older type of earthenware or cast pipe, which have no flexibility, the new liner is able to accept some degree of movement without cracking or splitting. The durability is covered by the terms of the warranty as issued.

How does it perform with High Pressure Water Jet Blasters and Electric Eels?

The Nu Flow liner is able to withstand a significant amount of water pressure within the pipe, as in accordance with the manufacturers instructions. The liner cannot withstand high-speed electric eels, but once the liner is in place there should be no reason to attack the inside of the pipe with an electric eel. This has never been tested and is not a requirement of Australian or International standards.

Does the product contain any toxic odours?

There are no toxic odours from any of the Nu Flow materials.

What is the transition lip like?

One of the major advances of the Nu Flow system is that the annulus, where the liner resin finished in the existing pipe, it is completely smoothed out to leave little to no lip at all.

Have you ever had blisters in your liner?

Because our liners are made from a felt fabric and of PVC, we have not had any experience with blisters or bubbling. Our liners are made of a fabric that is impregnated with a 2-part epoxy resin, making it completely unique and free of imperfections.

Have you ever had a problem with lifting of the patches? - Particularly on the edges?

No we haven’t. The Nu Flow product bonds to the host pipe, usually feathering out the transition between the liner and the host pipe. In the cases where we may have excess resin, we use a wire brush to ensure the transition remains smooth.

If your equipment becomes blocked in-line, how is it retrieved?

There are many techniques that can be utilised in this circumstance. One is the drilling out of a faulty liner with the last resort excavation and restoration method. In most cases, we warrant the retrieval of a faulty liner, unless we specify to the client that we are carrying out this process at their own risk and possible expense. In this case the client is made very aware before work is commenced, and their consent is given in writing. This usually occurs in a circumstance where there is no other option, and drastic measures must be taken.