The residents of Germany’s Passau districts Walding and Gaißamühle obtained their potable water from their privately-owned wells. To ensure a safe and durable water supply in the future, as well as a constantly high water quality, they decided together with the Passau municipal utilities to connect their properties to the municipal water network. In addition, a telecommunication and a vacuum sewage line were planned to be installed. The length of the new pipeline is about 520 m.

All piping components for this water line were supplied by Agru Kunststofftechnik GmbH. As a main water service line, a Sureline II pipe in OD 110 mm SDR 11 was chosen. This pipe is made out of high-grade crack resistant PE 100-RC material, which makes a sand bed around the pipe during the installation unnecessary. To create flexible and efficient branches from the main line to the house connections, the Agru pressure tapping valve (DAV) was used. The easy handling of the DAV, especially its mounting on the main pipe via fixation belt, as well as the low tapping torque, were highly appreciated by the installation team.

CREATING BRANCHES

The branches from the main line to the houses were carried out with Agru-Frank SurePex pipes and connected to the pressure tapping valves via electrofusion couplers. “The outstanding flexibility of the SurePex pipes as well as the extreme high crack resistance are the reasons, why we decided to use this special pipe. As the end customer is responsible for the installation of the house connection, pipes may be improperly installed. The SurePex pipe doesn´t require any sand bed at all and is extremely flexible, which makes an improper installation nearly impossible,” says Mahler, the responsible project manager from the Passau municipal utilities.

For the vacuum sewage line an OD 110 mm SDR 11 pipe was used. As shut-off valves Agru PE 100 ball valves with welded-in spigots for vacuum measurements were installed. The whole project was finished in about 10 weeks. By using Agru high quality materials for this piping system, a long lasting and maintenance-free operation was ensured.

HIGH-QUALITY PRODUCTS

As a reliable, professional supplier, Agru offers everything from semi-finished products through to technologically optimised injection moulded fittings, all from a single source. Founded back in1948 by Alois Gruber senior in Austria, nowadays the company is one of the world‘s most important single-source suppliers for high-quality piping systems, semi-finished products, concrete protection liners and lining systems made from engineering plastics. 

With its expertise in producing engineering plastics components and developing tailored solutions, Agru is present in virtually every sector of industry. Application areas include water and gas infrastructure, the energy sector, chemical and heavy industries, semiconductor and life-sciences, tank and apparatus building, naval and aviation industries, civil engineering and mining, building construction. 

The family-based company with more than 1.000 employees and production plants on several continents is being led by CEO Mag Alois Gruber, the son of company founder Alois Gruber senior.