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About product and suppliers:
        Alibaba.com offers 2,292 duckbill check valve products. About 62% of these are valves, 12% are other rubber products, and 1% are silicone rubber. 

A wide variety of duckbill check valve options are available to you, such as check, control, and butterfly. You can also choose from high temperature, normal temperature, and low temperature. As well as from rubber, plastic, and brass. And whether duckbill check valve is pneumatic, hydraulic, or manual. 

There are 2,212 duckbill check valve suppliers, mainly located in Asia. The top supplying countries or regions are China, Taiwan, China, and Turkey, which supply 99%, 1%, and 1% of duckbill check valve respectively. 

Duckbill check valve products are most popular in Domestic Market, North America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 2,212 with ISO9001, 500 with Other, and 91 with ISO14001 certification.