Stainless steel valves are usually used in situations where the working medium is corrosive to a certain extent. The corrosion resistance of any valve material to working medium is relatively limited and affected by many factors. If proper processing and heat treatment processes are adopted in the manufacturing process, the corrosion resistance of the material can be guaranteed. In the concentrated nitric acid medium with a concentration of more than 98%, no matter what heat treatment process is adopted, the steel has no corrosion resistance. Therefore, when selecting valve material according to the properties of working medium, it is necessary to study the influence of medium concentration, temperature and heat treatment process on the corrosion resistance of the material at the same time. Stainless steel valves have become the necessary purchasing products in various industries, but there are few domestic valve manufacturers that can meet international standards. Therefore, before purchasing stainless steel valves, customers must ask the merchants to provide production and factory certificates of various stainless steel valves, so as to reduce the purchase of substandard products. Today, stainless steel valves and sanitary valves meet international standards mainly from Japan, Germany, the United States, the United Kingdom and Shanghai, the first-tier city in China. Stainless steel valve is the control part of pipeline fluid delivery system. It is used to change the channel section and medium flow direction. It has the functions of diversion, cut-off, regulation, banzhi.37ix.com.cntiexinn.07858.netqingxiji.07858.netjilin.89ix.comshenyang.89ix.com
xining.89ix.comthrottling, check, diversion or overflow pressure relief. Valves for fluid control range from the simplest globe valves to various valves used in extremely complex automatic control systems. Valves can be used to control water, steam, oil, gas, mud, various corrosive media. Valve control can adopt a variety of transmission modes, such as manual, electric, hydraulic, pneumatic, worm wheel, electromagnetic, electromagnetic-hydraulic, electric-hydraulic, pneumatic-hydraulic, pneumatic-hydraulic, spur gear, bevel gear drive, etc. Under the action of pressure, temperature or other forms of sensing signals, the valve can operate according to the predetermined requirements, or simply open or close without relying on sensing signals. Closing, the valve relies on the driving or automatic mechanism to make the opening and closing parts move up and down, slip, swing or turn, thus changing the size of its runner area to achieve its control function.