PRE-INSULATED PIPE: COMPOSITION

• SERVICE PIPE OR PRIMARY PIPE (NIRON β)
• THERMAL INSULATION (PUR)
• JACKET PIPE (HDPE)

The real innovation: WELDING METHODS

The NIRON ALL-PRO system allows to carry out joining in two different ways: electrofusion welding (EF) and simultaneous butt welding (BFX2). Pipes and fittings have been designed to optimize installation times on site and, at the same time, to offer a system designed to reduce the thermal drops of the transported heat transfer fluids.

ELECTROFUSION WELDING: includes pre-insulated fittings that hold electrical resistances connected to external connectors that can be welded using welding units normally used for electrofusion joining. The innovation lies in that a single step allows to have an ALREADY PRE-INSULATED JOINT, thus allowing the reduction of installation times by at least 50%, and avoiding the long operations of restoring the insulation in the areas involved in the joining operation.

Pipes with EF terminals are designed to accommodate the installation of NIRON ALL-PRO electrofusion fittings without the need for cuts to size the lengths of the spigots.

The range of fittings also offers a wide range of combinations that adapt to the many requirements of the installation (branches, valves, tests, and end of line fittings).

WELDING OF ELECTROFUSION PRE-INSULATED FITTINGS 

SIMULTANEOUS BUTT WELDING: BFx2 simultaneous butt welding involves joining two specially prepared pipes so that the primary PP-RCT pipe does not extend beyond the secondary HDPE coating, thus ending on the same joining level. The primary and secondary pipes are heated and welded simultaneously, creating the perfect seal junction. In addition, the insulation of the joining areas is completed at the same time as the welding, without having to restore the same later. This allows for extremely fast joining, excluding the burden of purchasing fittings and sealing kits, with a saving in installation time of more than 80% if compared to traditional installation systems. The external coating is perfectly sealed, without any possibility of water infiltration.

This method produces an integral system that guarantees high integrity of the components and high stability of the pipeline, thus allowing to easily carry out special underground installations such as those with controlled horizontal drilling (TOC or HDD, horizontal directional drilling).

WELDING OF PRE-INSULATED SPIGOT FITTINGS BFX2

To complete the line, pre-insulated PP-RCT ball valves, stub ends, flanges (free and removable) and transition fittings are available. They allow to start from the source and reach the user with a single valid system.