A multilayer, multifunction system

Every component in the POLO-KAL NG system shares the same class-beating reliability, functionality and versatility achieved through 20 years of experience in triple layer technology. The intermediate layer of the pipe in special copolymer reinforced with mineral fibres, combined with the excellent properties of standard polypropylene, ensure superlative annular stiffness, optimum stability and unparalleled mechanical strength at low temperatures. When combined with the soundproofing properties of the system, these qualities make the POLO-KAL NG a superior class of pipe with unrivalled potential for use in different applications. While recognised as a system for creating silent drainage installations, the POLO-KAL NG can also be used to duct other fluids and substances (for a total of 10 different fields of application), such as fume extraction for condensing boilers and kitchen extractor hoods, dust extraction, air extraction (CMV) and chlorinated water ducting.

A triple layer pipe that is happy to tell you all about itself

When choosing materials and comparing the specifications declared by manufacturers, it is always important to see how much and which information is shown in the description of what the product is made of. With POLO-KAL NG everything is clearly stated, starting from the three layers making up the pipe.
Internal layer
Made from halogen and cadmium free copolymer polypropylene and thermostable at water temperatures up to 97°C, this layer offers excellent resistance against thermal aging and corrosion and superlative chemical stability. The smooth surface improves flow and prevents the accumulation of deposits, scale and bacterial growth.
Intermediate layer
The intermediate layer is in plastic reinforced with mineral fibres, which give the material superlative stability combined with a soundproofing effect.
External layer
The protective outer casing of the pipe is in halogen and cadmium free copolymer polypropylene, which is shock resistant even at low temperatures and weather resistant. The purity and homogeneity of the raw materials constituting this layer make it possible to repair accidental punctures with the specific hole repair disc. For more details, see the information in the section REPAIRS.

Take a closer look at what acoustic performance figures actually mean

Over the past decade, a growing interest in acoustic insulation in building, combined with a more comprehensive knowledge of technical matters among professionals in the sector, have made comparing the lab measured performance results of different materials an increasingly complex issue subject to ardent differences in opinion. The is because, taking water drainage systems as an example, there are often enormous differences in the decibel values published in the technical catalogues of manufacturers, and in the majority of these cases, it is impossible to understand the technical reasons behind these differences (or, rather, the reasons are not clearly explained). Above all, when reading acoustic performance figures measured in the laboratory, it is extremely important that the installation method used for the test is also taken into consideration. Moreover, the documents and certificates presented by the manufacturer of drainage systems must specify the type of noise level measurement, in decibels, used for the test (Lin or Lsca), as there can be significant differences, for instance, if the pipe fastener collars are unfastened (fitted loosely), while some test methods actually subtract the noise component attributable to the air, and only consider the influence of the acoustic bridge produced by the fastener collars (as in the case of the measurement Lsca).