home » 03. Joint Systems

How electrofusion pipes and PE fittings are performed

Normal 0 21 false false false ES X-NONE X-NONE MicrosoftInternetExplorer4 st1:*{behavior:url(#ieooui) } /* Style Definitions */table.MsoNormalTable{mso-style-name:”Tabla normal”;mso-tstyle-rowband-size:0;mso-tstyle-colband-size:0;mso-style-noshow:yes;mso-style-priority:99;mso-style-qformat:yes;mso-style-parent:””;mso-padding-alt:0cm 5.4pt 0cm 5.4pt;mso-para-margin:0cm;mso-para-margin-bottom:.0001pt;mso-pagination:widow-orphan;font-size:10.0pt;font-family:”Calibri”,”sans-serif”;}When a low tension electric current (from 8 to 48 V) is passed through the metal coils of electrowelding fittings, heating is produced (Joule Effect) that welds the pipe to the fitting. […]


The pipes of the supply network, are normally buried in the subsoil of the towns, under pavements, asphalt, paving stones, etc., covered with filling ground, gravel, graded-aggregate or buried and protected with concrete at junctions of streets or points where they can suffer high loads. It is not common that the pipes run visibly on the surface or on the interior side of visited galleries, conditions under which it would be simple to find the exact point of the damage and [...]

Jointing of large bore pipes. Electrofusion Couplers and Branch Saddles

In the AMI seminar, FRIATEC (www.friatec.com) introduced a new generation of electrofusion fittings Frialen –XL for PE pipe joining large diameter up to 1200mm which solves the Ovality problem and outer diameter Tolerances, that are important in these dimensions, through flexible electrofusion couplers. […]

New project of the normative PNE 53008 Part 2 about design, installation and maintenance of multilayer pipes for gas

Background The Subcommittee of normalization of AENOR SC2 “Plastic pipes and fittings” whose Secretary’s office is masterfully run by Mª Carmen del Amo of ANAIP, which depends on the Technical Committee of Normalization CTN 53 “Plastics and Rubber” of AENOR, whose Secretary’s office runs the entities ANAIP and COFACO. […]

Geothermic Energy, a very efficient solution

The geothermic conditioning is a much more efficient system of conditioning than the conventional systems that, besides, are classified as renewable energy. This technology is widely developed in many countries of the European Union, United States and Canada. The market of the shallow geothermic energy or of low enthalpy (whose direct product is heating, cooling and/or sanitary hot water) started its development in Spain around the year 2004. […]

The Geothermic Energy is one of the less known sources of renewable energy

Geothermic Energy The geothermic energy is the utilization of energy stored in the way of heat under the solid surface of the Earth. From the Greek “geos” = earth and “thermos” = heat. Some 4.500 millions of years ago, the Earth was an immense burning ball made essentially of gases and dust. When that nebula cooled and consolidated, some 3.800 millions of years ago, a hard crust was formed which caught inside a huge quantity of heat, which nowadays still persists [...]

Quicker sanitation installation with plastic pipes (video)

Since some time ago it is known that the installation of systems of plastic pipes for sanitation is much quicker than the installation of concrete pipes. TEPPFA – European Association of Manufacturers of Plastic Pipes and Fittings have now a graphic proof! […]

Transitions to connect different types of pipes or other elements

At the beginning of 2015 some people were interested in knowing solutions to join together different types of pipes or other elements like chambers, manholes, etc., what has motivated me to write this article about Transitions. • Pressure In the case of the PE pipes under pressure, the transition in small diameters, maybe up to 110 mm can be done with the thread of the mechanical fittings, for example, the union male thread or female thread, the same in some electrofusion [...]

II) Installation of PE manholes in unstable soils or with phreatic level (NF)

• Excavation of the ditch The dimensions of the excavation vary in function of the characteristics of the soils and they should be large enough to guarantee its stability. The whole excavated material should be removed from the surroundings of the excavation, to make sure that they don’t pollute the filling material. […]

I) Installation of PE manholes in stable soils and with no phreatic level

• Manipulation With the aim of avoiding damages in the deposits during its manipulation and transportation: – The download and manipulation of the manholes must be performed with a crane or through lift trucks, in function of the dimensions of the manholes. The manholes must never be thrown from the trucks to the floor. – The manholes must not be dragged across the soil. – It must not be generated punctual loads on the manholes. – The manholes must be not [...]