ZhengFeng Valve Group, founded in 1991 with focus on manufacturing Water valves, including control valves, balancing valves,gate valves, butterfly valves, check valves, and air valves. Valve sizing 1/2” to 88”, rating BS 10bar through BS 25bar, served covering buildings & construction,waterworks,fire protection and many other fields. Zhengfeng has excellent product quality and sound managing system. We have certificates of ISO9001, ISO14001,ISO18001,WRAS,FM,API 6D, CE, TS, and