ページの作成:「Instead, the system is divided into pressure zones, every with its own pump and pressure-reducing valves. For extraordinarily tall towers (above 50 tales or 200 meters),…」
(ページの作成:「Instead, the system is divided into pressure zones, every with its own pump and pressure-reducing valves. For extraordinarily tall towers (above 50 tales or 200 meters),…」)