Sejin Valve

Sejin Valve Industry Co., Ltd. is a leading South Korean valve manufacturer based in Busan, producing specialized valves wherever fluid control is required, from everyday applications to advanced industrial sectors. Its valve business delivers core technology for controlling and regulating fluid flow in petrochemical, energy, water treatment, and shipbuilding industries, incorporating smart valve and eco-friendly product lines that reflect market demands.

Beyond valves, the company is active in the SOC (social overhead capital) business, supporting the construction and maintenance of national infrastructure by combining digital transformation and green technologies into smart infrastructure solutions. It also participates in the defense industry, contributing to the development and production of weapon systems, military equipment, and defense technologies, including AI, drone, and cyber defense capabilities. Product lines include butterfly valves, check valves, plug valves, cryogenic and other special valves, ball valves, gate valves, and globe valves, backed by R&D and QC/QA systems with documented certifications.