We are a manufacturer of valve operation systems such as mechanical valve interlocks, portable actuators, and valve position indicators. We are the world’s largest interlock manufacturer, providing bespoke design solutions that protect people and property throughout the world. We create smart valve solutions that improve process and operator safety to protect people and the planet. Sofis is part of Halma PLC, a market leader in specialist safety, health and environmental technologies, registered at the London Stock Exchange. Halma’s business is about protecting and improving the quality of life for people worldwide. Halma companies have a core focus on health, safety, and the environment, providing innovative solutions for many of the key problems facing the world today.