I pressfitting, and you?
STAINLESS STEEL PRESSFITTING SYSTEM
Let us introduce the Numepress System
The NUMEPRESS pressfitting system, composed of “M” profile pipes and fittings in stainless steel and the pressing tools required for installation, can be used for a large number of installations in the civil, industrial and naval sectors, with diameters ranging from 15 mm to 168.3 mm.
The system is internationally acknowledged by leading certifying bodies.
It is PN16-approved and can reach temperatures as high as 200 °C, using the relevant O-rings.
Certificates of Quality
HITHERM S.R.L. warrants the Numepress system manufactured by Isotubi S.L. for 10 years after installation. The warranty covers manufacturing defects of the Numepress products and consequential damage to people or things. Please always consult our technical manuals. The warranty includes the following:
QUICK, SIMPLE, SAFE
The Advantages of Pressfitting
The NUMEPRESS pressfitting system is ideal for sanitary, fire-fighting, compressed air, heating, cooling, technical fluid and solar thermal installations… in the civil, industrial and naval sectors.
Sanitary systems require using the Numepress pressfitting system in stainless steel AISI 316L, in order to ensure maximum hygiene and prevent the risk of bacterial contamination. Unlike solutions providing a limited range of diameters, Hitherm keeps diameters ranging from 15 mm up to 168.3 mm in stock, for prompt delivery. Installing our stainless steel pressfitting system is synonymous with top quality; it is no coincidence that it is internationally acknowledged by leading certifying bodies, with over 25 certificates of quality and 10-year warranty.
Heating from solar energy is a constantly growing sector. It reduces CO2 emissions and thus air pollution. Like in fossil fuel heating, the Numepress pressfitting system can be applied – in stainless steel AISI 316L / AISI 304 – to open or closed-circuit installations. For this type of applications, since high temperatures are reached, the EPDM O-ring (standard, black, operating temperature -20 °C ÷ +120 °C) must be replaced with the FKM O-ring (green, operating temperature -20°C ÷ +200°C).
In compressed air distribution, typically in industry, the steel pressfitting system can fully prove its superior quality. For this type of installations, you can use both the HTair pressfitting system – composed of pipes in bare carbon steel or coated with blue PP, which create a finished product ready to be installed, and carbon steel fittings – and the Numepress pressfitting system in stainless steel AISI 316L / AISI 304 – where the pipes can be supplied bare or, on request, coated with blue PP. In compressed air installations, if the quantity of oil exceeds 5 mg/m3, the EPDM O-ring (standard, black) must be replaced with the FKM O-ring (green) in the fittings.
Steel pressfitting systems suit water distribution lines in the main heating installations (in heating plants, flats, offices and departments) perfectly. Hitherm’s HTpress pressfitting system in carbon steel is ideal for closed-circuit heating installations. Hitherm’s range available in stock for prompt delivery comprises diameters from 15 mm up to 108 mm, with a 5-year warranty on the system. Heating installations can also be made with the Numepress pressfitting system in stainless steel (fittings in AISI 316L and pipes in either AISI 316L or AISI 304 respectively), which results in top quality and increased corrosion resistance. Hitherm’s range available in stock for prompt delivery comprises diameters from 15 mm up to 168.3 mm, with a 10-year warranty on the system.
As for cooling installations as well as for low temperature water or air conditioning installations, and thus installations with hot and cold water flows, the stainless steel of the Numepress pressfitting system is no doubt the material that creates a perfect combination between quality, corrosion resistance and durability. Using the HTpress pressfitting system – with carbon steel pipes and fittings coated with white PP – for use only in closed circuits means a definitely cheaper alternative, although it requires increased attention and flawless execution. In addition, the fittings must be protected with Hitherm’s special isobutyl band, to prevent corrosion from condensation. Such condensation protection does not replace the heat insulation of pipes.
Numerous fire prevention installations are available nowadays. Pressfitting is becoming increasingly popular for installations in this sector, based on quick laying, low labour costs, reduced overall weight of the installation and, therefore, decreased use of clamps and fixtures, and less fatigue for the staff in the making process. Sprinkler Installations, Hydrant Networks, Foam Installations and Low-Pressure Water Mist Installations can all be made with our HTfire and Numepress Pressfitting Systems, composed of carbon or stainless steel pipes coated in red PP RAL 3000, to create a finished product ready for laying, and carbon or stainless steel fittings. Carbon steel can be used for sprinkler installations and wet hydrant networks, whereas only stainless steel can be used for foam installations, low-pressure water mist installations, dry hydrant networks and sprinkler installations. Not only can stainless steel boast the above-mentioned pluses, but it is also internationally acknowledged for its outstanding quality and reliability, which includes FM certification and a 10-year warranty on the product.
NUMEPRESS pressfitting system in stainless steel AISI 316L, certified for applications in gaseous state Methane Gas, Natural Gas and LPG installations. Only for applications in outside lines, and not for chased installations. Maximum operating pressure from Ø 15 mm up to Ø 108 mm: 5 bar (PN5). Operating temperature (HNBR O-ring): - 20 °C ÷ +70 °C. The fittings of the Pressfitting system in stainless steel AISI 316L for gas applications stand out for their marking and yellow HNBR O-ring, specially designed and developed for gas installations in accordance with the EN549 standard, used in the factory for all the fittings of the NUMEPRESS system for gas installations and resistant to high temperatures GT1.
Stainless steel, namely AISI 316L or AISI 304, is no doubt the material of choice for this type of installations, which further testifies to the ultimate reliability and quality of the Numepress pressfitting system. From the transportation of technical water, oil and fuel to the transportation of special fluids for industrial and naval applications, the pressfitting system is being increasingly used for a number of applications, because of quick, easy laying, safety in the workplace and the comprehensive range of products. It is recommended to always check that a proper O-ring is being used.
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