STS is one of the leading valve manufacturers in Türkiye. The company, founded in İstanbul in 1984, is specialized in ballvalve manufacturing.

STS is expanding the product range with all types of ballvalves in its modern factory in Kırıkkale.

In addition, globe valves, checkvalves under the licence of German-Gestra are also produced by STS.

To reach its goal of becoming an international manufacturer, the firm has established ISO 9001 Quality Assurance System and received the revelant certificate.

STS makes investments tocompete in the worldmarket and improves its research and development activities.