as a direct pipe fittings manufacturer we provided world class excellent quality products with most reasonable price
Flange Ruber duckbill valves is a simple, reliable, cost effective method of backflow prevention. The series duckbill check valve is designed to be installed between two mating flanges. The simple maintenance-free elastomer with a flanged connection elimi
Flange integral duckbill check valve is a simple, reliable, cost effective method of backflow prevention. The series flange integral duckbill check valve is designed to be installed between two mating flanges. The simple maintenance-free elastomer with a
HUANZHONG Duckbill Check Valve is reliable and cost effective flow control solution.Rubber duckbill valve for sewage made in our company have been receiving reputation not only at home but overseas.