There are many different varieties of carbon steel valves, including screwed, flanged, high temperature, high pressure, and other sorts. In fluid control systems, plug valves, gate valves, and needle valves are all employed for various purposes. The flow is closed and opened by the carbon steel valves using balls inside their bodies that can travel back and forth. The gate valves made of carbon steel are both more ductile and robust. They are operated by a threaded stem attached to the gates, which have gates to control the flow of liquid. A handwheel rotates the threaded stem. Are you trying to find an Indian producer of carbon steel valves. The sizes and pressure capacities of the various types of gate valves vary. While other valves are bidirectional and permit flow in both directions, some valves are unidirectional and permit materials to flow only in one direction.