Providing Safety
Sofis logo

Sofis, previously known as Smith Flow Control, is an English producer of mechanical interlock systems for valves. These locks make sure that valves can only be opened or closed in a predetermined order.

Interlocking is a tested and trusted method for safe work based on exchanging coded keys.

Sofis is the first producer of the coded open-end wrench, which today is a much-used product in the industry. |

Sofis Products

Our range of Sofis products consists of valve interlocks systems