The largest AVK gate valve has just been installed in a wastewater transportation project in Jiaxing City, China, to meet the needs of an increasing wastewater production.
Pollution from wastewater continues to be a major issue all over the planet. The lack of suitable water used for drinking, agriculture, farming, etc. is decreasing and proper methods of treating and recycling water is the key to sustaining our already limited water resource supply.
Jiaxing City, Zhejiang Province, China, experience an increase in the amount of daily wastewater production, and the existing treatment plant has long been operating under overload. This leaves the issue with wastewater transportation increasingly critical as days go by. Therefore, a sewage treatment expansion and discharge project was initiated, including a 63.5km DN1400-2200 pipeline with an ultimate sewage transport capacity of 400,000 m³/d. Three midway lifting pump stations will be constructed as well.
Together with AVK Shanghai, AVK Anhui provided eight DN1800 metal seated gate valves as well as one huge DN2200 electric operated gate valve for this project. The giant weighs 27 tons and is more than 7m tall in total. It is installed at the outlet of the pump station pipeline which is connected to the wastewater treatment plant. Its full bore design offers lower head loss and pump consumption. A by-pass valve, drain valve, jacking screw as well as shoes-&-channel options ensure smooth operation of the valve.