The Largest Gate Valve Ever Supplied by AVK - DN 2200 Standing 7M Tall

Wastewater is water affected by human activities which continues to be a major issue all over the world. The lack of suitable water used for drinking, agriculture, farming is fast diminishing, and proper treatment and recycling of this water is key to sustaining our already limited water resources.

In order to meet the needs of increasing wastewater production in Jiaxing City, China, the largest AVK gate valve is just been installed in the wastewater transportation project.

Jiaxing City in Zhejiang Province, China, was experiencing an increase in the amount of daily wastewater production, and the existing treatment plant had long been operating under overload. This left the issue with wastewater transportation increasingly critical as days passed by. Therefore, a sewage treatment expansion and discharge project become paramount and had to be undertaken, including a 63.5km DN1400-2200 pipeline with an ultimate sewage transport capacity of 400,000 m³/d and three midway lifting pump stations to be constructed as well.

AVK Shanghai, together with AVK Anhui provided eight DN1800 metal seated gate valves along with one gigantic DN2200 electrically operated gate valve for this project. Weighing 27 tons and more than 7m tall in total, this gate valve is installed at the outlet of the pump station pipeline which is connected to the wastewater treatment plant. The full-bore design of this gate valve offers lower head loss and pump consumption along with a by-pass valve, drain valve, jacking screw as well as shoes-&-channel options ensuring smooth operation of the valve. 

All in all, a powerful, reliable solution, which with its mammoth size looks like a beautiful piece of art.

The valve is the largest gate valve produced by AVK Anhui till date (mid 2021). With boundless support from AVK Tech and our global capabilities, AVK Anhui delivered the valve from inception: From drawings to raw castings, from machining to shot blasting, from coating to assembly, from testing to packing, and from delivery to final installation and commissioning. Each step demonstrating our quality in every processes.

Especially, within large, specialized valves - AVK Anhui continues to advance and augment their supply chain to all local sales companies all over the world, as one of the largest manufacturing facilities within the AVK Group.

Expanding production capacity

Over the last decade, quite a few records has been set regarding size:

  • 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 hydraulic 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 will follow soon, as the extension of AVK Anhui's factory for large valves is scheduled to be ready by 2022, allowing them to double their production capacity.