Stop Silent: Case study about reservoirs

Lasso Technik AG visited the municipality of Oltingen in the Upper Basel region in mid-March. The tranquil village of 500 souls owns one of the largest freshwater springs in Canton Baselland: the Gallisloch spring.

The normal flow rate of this source is on average 18 litres per second. At peak times up to 40l/s!

In the course of a revision of the pumping station, the leaking check flaps were replaced. Instead of the old check flaps, two Stop Silent® check valves were installed.

Rolf Gysin, fountain master from Oltingen, and Anton Graf, owner of Graf Pumpenservice & Metallbau, underline the advantages of the Stop Silent® valves: In addition to the silent closing of the rubber membrane, the easy-care maintenance of the system is highlighted.

In the middle of January 2013 a Stop Silent® AS54 valve for the intermediate flange assembly was installed in the Riedenweg reservoir in Nunningen. This installation was necessary to guarantee backflow prevention between the Riedenweg reservoir and a second reservoir connected to the same water network.

The two plumbers from Spaar Haustechnik in Oensingen installed the valve within a remarkably short time. Compared to conventional check valves, the lightweight design of Stop Silent® allows simple installation in freely suspended pipe systems without additional reinforcements. This is also confirmed by Mr. Giovanni D’Aversa of Schmidlin + Partner, Ingenieure und Planer AG. According to him, the Stop Silent® valves are regularly used by his company.

This is just one of many possible uses for the Stop Silent® check valve. Stop Silent® check valves are also available with a silicone membrane that meets today’s standards for drinking water.