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.
Wastewater pollution remains a pressing global challenge. With diminishing availability of clean water for drinking, agriculture, and farming, the need for effective water treatment and recycling methods is more critical than ever to preserve our finite water resources.
In Jiaxing City, located in Zhejiang Province, China, increasing daily wastewater output has pushed the current treatment facility beyond its capacity. This has made efficient wastewater transport an increasingly urgent concern. To address the issue, a major sewage treatment expansion and discharge initiative was launched. It includes laying a 63.5 km pipeline ranging from DN1400 to DN2200, capable of transporting up to 400,000 m³ of sewage per day. Additionally, three intermediate lifting pump stations are planned for construction.
For this project, AVK Anhui partnered with AVK Shanghai to supply eight DN1800 metal-seated gate valves and one massive DN2200 electrically operated gate valve. This towering unit stands over 7 meters tall and weighs 27 tons. Installed at the pump station outlet that connects to the wastewater treatment facility, its full bore construction minimizes head loss and reduces energy demand from the pumps. Operational features like a bypass valve, drain valve, jacking screw, and shoes-and-channel configuration ensure smooth and reliable performance
All in all, a robust and dependable solution, which with its sheer size resembles a remarkable piece of engineering art.
The valve stands as the largest gate valve manufactured by AVK Anhui as of mid-2021. With solid backing from AVK Tech and our global resources, AVK Anhui successfully delivered the valve from the ground up: from initial design to raw castings, from precision machining to surface treatment, from protective coating to full assembly, from rigorous testing to packaging, and from dispatch to final commissioning on-site. Every step showcases the excellence built into our processes.
As one of the leading production sites within the AVK Group, AVK Anhui consistently strengthens and advances its supply chain for all affiliated sales companies worldwide—particularly in the domain of large, specialized valves.
Expanding Production Capacity
Over the past ten years, several size milestones have been achieved:
- DN1800 metal-seated gate valve (series 54, 2011)
- DN2800 double eccentric butterfly valve (series 756, 2013)
- DN1000 swing check valve (series 641, 2015)
- DN900 free discharge valve (series 857, 2015)
- DN1000 resilient-seated gate valve (series 06, 2017)
- DN1200 recoil check valve (series 641, 2018)
- DN800/600 submerged discharge valve (series 856, 2020)
- DN1600 hydraulically operated butterfly valve (series 756, 2021)
- DN3000 double eccentric butterfly valve (series 756, 2021)
- DN1800 plunger valve (series 872, 2021)
- DN2200 metal-seated gate valve (series 54, 2021)
And more developments are underway, as AVK Anhui’s factory expansion dedicated to large valve production will be completed by 2022 doubling its overall production capacity.