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1070 50mm flange valve products are offered for sale by suppliers on Alibaba.com, of which gate valves accounts for 26%, ball valves accounts for 17%, and butterfly valves accounts for 8%. A wide variety of 50mm flange valve options are available to you, such as normal temperature, medium temperature and high temperature.You can also choose from stainless steel, alloy and carbon steel 50mm flange valve,as well as from black, white, and silver 50mm flange valve,