509 knife ball valve products are offered for sale by suppliers on Alibaba.com, of which gate valves accounts for 45%, ball valves accounts for 7%, and valves(old) accounts for 3%.
A wide variety of knife ball valve options are available to you, such as pressure, manual and hydraulic.You can also choose from normal temperature, medium temperature and high temperature knife ball valve,as well as from water, gas, and oil knife ball valve, and whether knife ball valve is steel, stainless steel, or iron.