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About product and suppliers:
        Alibaba.com offers 1,948 duckbill valve products. About 52% of these are valves, 16% are pipe fittings, and 15% are other rubber products. 

A wide variety of duckbill valve options are available to you, such as check, control, and plug. You can also choose from rubber, plastic, and forged. As well as from water, gas. And whether duckbill valve is low pressure, medium pressure, or high pressure. 

There are 1,953 duckbill valve suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Ireland, which supply 99%, 1%, and 1% of duckbill valve respectively. 

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

You can ensure product safety by selecting from certified suppliers, including 1,892 with ISO9001, 367 with ISO14001, and 309 with Other certification.