11295 vent air valve products are offered for sale by suppliers on Alibaba.com, of which other valves accounts for 31%, control valves accounts for 13%, and safety valves accounts for 5%.
A wide variety of vent air valve options are available to you, such as pressure, manual and hydraulic.You can also choose from normal temperature, medium temperature and high temperature vent air valve,as well as from water, gas, and oil vent air valve, and whether vent air valve is steel, stainless steel, or iron.