Stainless valves are often made of 316 and 304 stainless steel, two types of steel. 316 stainless steel contains 16% chromium, 10% nickel, and 2% molybdenum, respectively. Both types of steel are more corrosion resistant than 304, but the former is less expensive. 316 valves are ideal for applications where corrosion is a major concern, since their surfaces are in contact with the media flowing through them. 304 valves are a great choice for applications that involve low amounts of…