Brass water meter connecting ball valve

Copper valves, which are valves cast with copper, belong to industrial parts and were first developed and manufactured in Ningbo, Zhejiang Province, China. In the early 1980s, Ningbo, Zhejiang took the lead in developing manufacturing processes, changing the history of long-term use of cast iron valves in China. The sand casting process was initially adopted in the manufacturing process, and in the early 1990s, it was changed to forging process. By the beginning of the 21st century, China had developed into the world's center for copper valve manufacturing.