About product and suppliers:
            1,369 duckbill check valve products are offered for sale by suppliers on Alibaba.com, of which valves accounts for 34%, pipe fittings accounts for 1%. 

A wide variety of duckbill check valve options are available to you, such as rubber. You can also choose from check duckbill check valve, as well as from water, gas, and base duckbill check valve, and whether duckbill check valve is general. 

There are 573 suppliers who sells duckbill check valve on Alibaba.com, mainly located in Asia. The top countries of supplier is China, from which the percentage of duckbill check valve supply is 100% respectively.