For liquid and air valves, you might want to use stainless steel so that your spring will not rust. On springs for liquid valves, you are faced with a moist environment and in the case of an air valve you are faced with condensation which is a sort of fog also made from moisture. Your springs for valves may also be in a place where they will have to resist very high temperatures. In these cases, stainless steel is also a great option. The types of stainless steel we carry at Acxess Spring for your valve springs’ manufacturing are Stainless Steel 302 A313, Stainless Steel 17-7 A313, and Stainless Steel 316 A316. To check the properties of our stainless steel material types, please visit our Properties of Common Spring Materials page under the Tech Info tab on our website.