9736 valve hardness products are offered for sale by suppliers on Alibaba.com, of which gate valves accounts for 9%, ball valves accounts for 6%, and needle valves accounts for 2%.
A wide variety of valve hardness 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 valve hardness,as well as from black, white, and silver valve hardness,