Operating and installation conditions
operating temperature–40 to +50 °C;
the minimum service life under normal operating conditions is 20 years when laying in the ground, 25 years when laying in rooms, channels and tunnels;
preferred applications are in rooms, channels and tunnels. It is allowed to lay in the open air, provided that it is protected from mechanical damage and direct sunlight, as well as to lay in the ground while ensuring
their protection in places of access to the surface;
gasket temperature-not less than -15 °C;
the size of the mounting bends — not less than 6 diameters along the shell.