Two projects in China and India use large-diameter AVK valves to improve the reliability and safety of clean-water supply systems.
AVK China contributes to two projects improving the reliability and safety of clean-water supply
More cities are facing water scarcity and serious challenges in supplying sufficient fresh water to their residents. Population growth and longer periods of drought are driving the need for new approaches that secure a clean and safe water supply.
Taizhou Water Diversion Project - China
Taizhou in China has experienced water shortages during each dry season, with particularly serious effects in Yuhuan and Wenling. The city therefore launched the Taizhou Water Diversion Project, including water-intake works, a raw-water transmission system, a water treatment plant, 77 km of water-supply pipelines and total investment of RMB 3.72 billion in the distribution network. The project is expected to significantly improve supply reliability for approximately three million residents of Taizhou.
The project required an innovative and sustainable solution. Installation sites were remote, environmental conditions were harsh, construction was complex and future maintenance needed to be minimized. High efficiency, durability and low maintenance cost were therefore central criteria in selecting the valves. AVK China supplied 36 DN2400 double-eccentric butterfly valves designed to meet high quality standards, withstand demanding conditions and comply with drinking-water approval requirements.
AVK double-eccentric butterfly valves incorporate several features that support long service life and reliable operation. The inclined-disc design contributes to extended service life and easy operation, while AVK's rubber-compound and coating technologies are designed to enhance valve durability.
The valve-disc sealing ring is manufactured from high-quality drinking-water-approved EPDM with strong elastic performance. The shaft sealing arrangement is fully protected from the inside to the outside against external contamination and can be replaced under pressure for easier maintenance. The valves are epoxy-coated internally and externally in accordance with DIN 30677-2 and the coating process is GSK approved.
Water distribution network project - India
Another project focused on securing clean and safe drinking water is underway in India. AVK China is participating in a water-distribution network project for which AVK Anhui completed production of its first Series 756 DN3000 valve.
AVK Anhui supplies thousands of valves to projects every year, but at three metres in diameter these valves were the largest units the company had supplied at that time.
AVK Anhui managed the complete manufacturing process, including machining, shot blasting, coating, assembly and hydrostatic pressure testing. The valves were then shipped to India, where AVK India would complete the project. As in the Chinese project, these very large valves are intended to address water-scarcity challenges and improve supply reliability for safe drinking water.
A complete solution, not only a product
AVK's approach is to provide complete solutions rather than individual products alone. This supports quality at each stage, from selecting the correct valve to installation and final inspection. A broad product portfolio can be combined into application-specific solutions, supported by technologies across multiple product components. AVK states that this confidence in product quality supports a 10-year product warranty.
