A valve technician installs, maintains, and repairs industrial valves and related mechanical systems, which involves inspecting, testing, calibrating, and troubleshooting valves like control, gate, and safety relief valves. Key responsibilities include disassembling and reassembling valves, following schematics and manuals, adhering to safety regulations (like OSHA), documenting all activities, and maintaining records of maintenance and repairs. This role demands strong mechanical skills, attention to detail, problem-solving abilities, and good communication to interact with customers, supervisors, and other personnel.