319 dn40 dn400 butterfly valve products are offered for sale by suppliers on Alibaba.com, of which butterfly valves accounts for 77%, ball valves accounts for 3%, and gate valves accounts for 2%.
A wide variety of dn40 dn400 butterfly valve options are available to you, such as manual, hydraulic and pneumatic.You can also choose from normal temperature, medium temperature and high temperature dn40 dn400 butterfly valve,as well as from water, gas, and oil dn40 dn400 butterfly valve, and whether dn40 dn400 butterfly valve is steel, stainless steel, or iron.