AVK China has delivered valves to a large-scale project in Hangzhou to prevent saltwater entering the city's local drinking water supply.
Every year, thousands of tourists gather by the river of Qiantang River in Hangzhou City, China, to experience the phenomenon of the Qiantang Tide. This may look like a tsunami, but actually it is a tidal bore; a wave that flows upstream as high tide approaches. More than 80 rivers around the world have tidal bores. However, the one of the Qiantang River is the world's largest with waves up to 10 m, 3 km wide and a racing speed of 24km/h. Its rumble can be heard more than an hour away before it arrives.
Fascinating, but complicated
The project is planned to be implemented in two phases. AVK China has provided a complete valve solution for the first phase, with exceptional durability and flexible configuration options to meet the project’s strict requirements.
In this first phase, the construction includes the water intake pump station to the Jiuxi water plant, a water transmission pipeline from the Shanhusha reservoir (parallel double pipes, single length about 6.6 km), multi-source water distribution wells in Jiuxi water plant, and relevant equipment renovation.
Products delivered to the project (so far):
- 22 x double eccentric butterfly valves (DN1600-3200)
- 40 x resilient seated gate valves (DN300-800)
- 22 x air valves (DN300)
- 5 x hydraulically operated check valves (DN1000-1200)