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About product and suppliers:
        Alibaba.com offers 1,622 4 inch butterfly valve products. About 96% of these are valves, 1% are pipe fittings. 

A wide variety of 4 inch butterfly valve options are available to you, such as butterfly, ball. You can also choose from casting, stainless steel, and forged. As well as from medium temperature, low temperature, and normal temperature. And whether 4 inch butterfly valve is water, acid, or base. 

There are 1,626 4 inch butterfly valve suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Thailand, which supply 99%, 1%, and 1% of 4 inch butterfly valve respectively. 

 inch butterfly valve products are most popular in Southeast Asia, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 837 with ISO9001, 126 with Other, and 90 with ISO14001 certification.