A cross-linked polyethylene pressure pipe with a barrier (anti-diffusion) layer of ethylene vinyl alcohol (EVOH) is intended for the construction and repair of internal networks of cold, hot water supply and radiator heating of buildings, including underfloor heating (operation classes 2, 4, 5 according to GOST 32415- 2013).
It is allowed to use pipes for non-category technological pipelines transporting liquid media that are non-aggressive to the pipe material.
ONE PLUS PEX / EVOH pipes consist of 3 layers:
ONE PLUS PEXа / EVOH pipes are specially designed for use not only in hot and cold pressure water supply systems, but also in central heating systems, as they meet the requirements of SNiP 41-01-2003, which prescribes the use of polymer pipes with an oxygen permeability index of no more than 0.1 g / m3 per day (also the requirements of GOST 32415-2013, DIN 4726). Oxygen is corrosive to heating systems. Penetrating through the pipe wall, oxygen causes corrosion of the metal elements of the heating system (boilers, heat exchangers, valves, thermostats, etc.).
Scope of ONE PLUS PEXa / EVOH pipes 2, 4, 5, ХВ operating classes according to GOST 32415-2013:
The main feature of the installation of ONE PLUS TM PEXa / EVOH polymer pipes is the use of fittings with a slip sleeve. Also, this system is called axial press-fit piping system. A distinctive feature of this system are: