Polypropylene plastic pipes used in hot and cold water installations and heating installations.

NCh 3151 Parte 2 Sistemas de tuberías plásticas para instalaciones de agua fría y caliente: Polipropileno (PP) - Parte 2: Accesorios (Chilean Standard (NCh) No. 3151 - Part 2: Plastic piping systems for hot and cold water installations: Polypropylene (PP) - Part 2: Fittings) (28 pages, in Spanish)

The notified Standard establishes the requirements governing polypropylene fittings and joints used in hot and cold water distribution system installations and heating installations, at design pressures and temperatures appropriate to the class of application (See Table 1 of NCh No. 3151, Part 1). It also applies to the conveyance of water that may or may not be intended for human consumption, under the design and temperature conditions specified therein. It covers a range of service conditions (classes of application), design pressures and pipe dimension classes. It does not apply where the values of the design temperature, maximum design temperature and malfunction temperature are in excess of those indicated in Table 1 of NCh No. 3151, Part 1. The Standard specifies the parameters for the test methods referred to therein and covers the following types of fittings: socket fusion fittings, electrofusion fittings, mechanical fittings and fittings with incorporated inserts. It is also applicable to fittings made from alternative materials which, when fitted to pipes conforming to NCh No. 3151, Part 1, conform to the requirements of ISO 15874-5.