Valve sensors for rising stem valves are not a specific brand but a product category used in industrial valve automation. These sensors are typically offered by global companies like Emerson (USA), Siemens (Germany), or ABB (Switzerland), specializing in process control and valve monitoring. They serve industries such as oil & gas, water treatment, and chemical processing, providing feedback on valve position (open/closed) for rising stem designs. Key products include limit switches, proximity sensors, and smart positioners integrated with IIoT capabilities.