WASTOP ® ENERGY SAVED AT STORMWATER PUMP STATION WITH WASTOP IN SWEDEN Location: Stockholm, Sweden Customer: Stockholm Water PROBLEM: One of Stockholms oldest storm water pump stations which lifted water a few meters was built with two metal ap valves. The ap valves didnt function particularly well and when the pump was not running water leaked back into the pump causing damage to the pump. This lead to high repair costs and the pump ran more than necessary leading to higher energy usage. Noise pollution was another issue as every time the pump stopped the metal ap valves slammed shut causing irritation to local residents. Stockholm WaStop Stockholm WaStop SOLUTION: Wapro offered a WaStop NPS 30" as a solution. The existing opening and ange was measured and a customized WaStop was

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