37 Installation, maintenance and repair of control and fail-safe apparatus and installations, namely, valves, motorised valves and light mechanisms for use in pipelines and channels, particularly in the chemical, petrochemical, water and waste and power generating industries, control and fail-safe apparatus and installations for industrial processes, electronic assemblies, computer hardware for monitoring and controlling industrial processes, control apparatus and installations, namely, electrical/electronic means for controlling the operating of moveable equipment and mechanisms, namely, valves, motorised valves and light mechanisms for use in pipelines and channels, and of parts and fittings for the aforesaid goods