City of Wädenswil (CH)
In 2010, four stormwater tanks in Wädenswilon Lake Zurich were equipped with MID-controlled PNA pneumatic discharge controls. This system was chosen at that time because it could be easily retrofitted in the old tanks, requires little space and allows the throttle volume to be changed at any time. In addition, a complete throttle shaft from STEBATEC was installed in the rainwater reservoir Schlossgasse, which has an untypical geometry due to its location between the railway track and the rainwater reservoir.