In many cases, steel pipe connections are still welded in heating and cooling systems and industrial applications. This is not only time-consuming and laborious, but there is also the risk of fire. With “Megapress”, thick-walled steel pipes in nominal widths of ½” to 2” can now be pressed within seconds. The assembly time is reduced by up to 60 per cent.
Most pipe connections in building technology are no longer soldered, screwed or welded now. Instead, they are “cold” pressed. This is more economical due to the faster processing time, as well as being more secure as open flames are no longer needed. For thick-walled steel pipes in accordance with DIN EN 10220/10255 and DIN EN ISO 6708, these processing advantages could not be exploited up to now as the external diameter of the pipes exhibit considerable dimensional tolerances. Viega has now developed a practical solution with the “Megapress” system. A special profile-sealing element made of EPDM is now integrated into steel connectors made from material 1.0308 (St 37) with a zinc-nickel coating. In combination with a cutting ring, this ensures a durable, impermeable and friction-locked connection on the rough surface of black, galvanised, painted or epoxy resin-coated steel pipes.
Time saving of up to 60 per cent
The time saving of the new press connection technology for steel pipes is considerable. Depending on the external nominal width (1/2” to 2”), this can be up to 60 per cent in comparison with conventional connecting processes such as welding, clamping or screwing. Processing is as simple as with all other Viega press systems: Cut the pipe to length, position the connector and press.
In addition, “Megapress” connectors offer the security against forced leakage in an unpressed state due to the SC-Contur: Inadvertently unpressed connections become visible during the leakage test. After pressing, the connections are permanently sealed.
Press effortlessly
Working with the “Megapress” system is not just more secure for the fitter. It is also not as strenuous as welding: Typical steel pipe installations for compressed air, industrial, fire extinguishing and sprinkler systems are often at several meters high, positioned below the hall ceiling. Welding in this position requires effort and is dangerous. With the well-known Viega pressing tools, the connection can be pressed effortlessly above the fitter’s head. Viega supplies the accessory in a practical case, which includes three press jaws (1/2” to 1”), three press rings for nominal widths of 1¼” to 2” and hinged press jaws. This makes it possible to carry out press connections in restricted spaces.
Already successful in the USA
The system has already proven its practicality on the US market millionfold. The steel connections produced in Viega’s Großheringen site in Germany have been used here for almost two years.
The press system is suitable for heating and cooling systems and for industrial applications up to 16 bar and 110°C.
