Multi Layered Pipe System
Certification – MLC pipe and connection systems are approved in numerous countries throughout the world, e.g. Switzerland, Netherlands, Italy, Norway, Poland, Russia, United Kingdom
DVGW certification of MLCP system, including connection systems and the materials plated brass and PPSU.
General test certificate of the supervising authority (ABP) for MLC pipe penetrations (bulkheads)
R 30 to R 90 with ROCKWOOL Conlit shells 150 P/U for the outer diameters 14 to 110 mm.[/vc_headings][vc_headings borderwidth=”5px” borderclr=”#acdd4f” align=”left” title=”Description of Pipe” titlesize=”30px” titleclr=”#acdd4f”]The Uponor multi-layer composite pipe (MLCP) is a pipe generation that unites the advantages of a plastic and metal pipe and therefore offers a high degree of flexibility and toughness, coupled with high pressure and temperature resistance. MLC pipe consists of a lap welded aluminium pipe with an inner and outer polyethylene layer. All layers are permanently bonded together by means of an intermediate adhesive layer. The PE material is noncross- linked polyethylene of raised temperature resistance according to German DIN 16833. Owing to the specific form of the octene side chains in the molecular structure of the material, a similar effect is achieved when polyethylene is cross-linked. Lap welding of the aluminium pipe produces a highly reliable and lasting connection on account of the wider joint. The thickness of the aluminium layer is therefore not decisive for welding and so can be adapted to specific handling requirements.Smaller dimensions of MLC pipes are designed so that the aluminium layer neutralises the snap-back forces of the plastic material, enabling easier pipe installation with minimal effort.
Larger dimensions of MLC pipes and straight lengths of pipes have a greater aluminium layer thickness, making them stiffer and suitable for use as risers. The aluminium pipe is important for heat expansion. Owing to the permanent bond between plastic and aluminium, thermal expansion is determined by the expansion factor of the aluminium and roughly corresponds to that of a metal pipe, i.e. only 1/7th of the expansion of a pure plastic pipe. This offers advantages for pipe installation, since the use of compensating points is largely unnecessary. The smoothness of the inner plastic layer offers water no points of attack. Incrustration and corrosion are prevented in normal use. The transmission of flow noise or noise, e.g. emitted by circulating pumps, is reduced to a minimum due to the specific properties of the raw material.
The most important advantages offered by MLC pipes are:
- Absolutely diffusion-tight, exceed the requirements of DIN 4726
- Hygienicly harmless
- Minimal roughness k = 0.0004 mm ensuring less pipe friction and lower pressure losses.
- Form stable, by compensation and reduction of snap-back forces
- Highly flexible, making smaller dimensions (up to 32 x 3 mm) simple to bend by hand or with the corresponding tool
- Heat expansion similar to that of metals, enabling larger pipe clip distances
- Clean and easy to install, no welding, soldering, thread cutting or bonding Corrosion-resistant, thanks to its inner and outer plastic layer
- Excellent long-time rupture strength offers safety in daily use
- Maximum temperature: 95 °C
- Maximum continuous operating pressure: 10 bar at 70 °C continuous operating temperature, with a tested longtime rupture strength of 50 years, safety factor 1.5
- * Low weight,
- Coils and straight lengths in numerous sizes
[/vc_headings][vc_headings borderwidth=”5px” borderclr=”#acdd4f” align=”left” title=”Press Settings (MLPC)” titlesize=”30px” titleclr=”#acdd4f”]The patented MLCP pressing system enables connections to be established within a matter of seconds without welding or soldering. The externally fixed press sleeve, which is permanently connected to the fitting, offers protection against mechanical influences on the o-rings. The press sleeve has inspection windows to check the insertion depth of the pipe in the fitting before pressing.
The plastic stop ring on the shaped aluminium press sleeve simplifies the task of attaching the pressing jaws. The stop rings are colour coded to ensure an optical press marking. After the pressing procedure the rings fall off. The pressing jaws and the stop rings of the same dimension have been marked with the same colour code. After installation, the connection is capable of ab-sorbing bending forces, due to the form stable press sleeve, without any leakage occurring. After pressing the pipe can be readjusted.[/vc_headings]