1036 dn20 butterfly valve products are offered for sale by suppliers on Alibaba.com, of which butterfly valves accounts for 49%.
A wide variety of dn20 butterfly valve options are available to you, such as normal temperature, medium temperature and high temperature.You can also choose from stainless steel, alloy and aluminum alloy dn20 butterfly valve,as well as from black, white, and silver dn20 butterfly valve, and whether dn20 butterfly valve is screw, compact, or ball float.