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.