Valve (famen) is a fluid delivery system control unit, with the cut-off, regulation, diversion, to prevent reflux, regulation, diversion or overflow relief functions. Valves for fluid control systems, from simple shut-off valve to a variety of highly complex automatic control valves used in the system, which is quite wide varieties and specifications. The valve can be used to control the flow of air, water, steam, corrosive media, mud, oil, liquid metals and radioactive fluids and other types...