16. How to set-up the limit switches for different type of valves?

All types of valves shall be set to stop by limit switch ( position switch) upon opeing. Torque switch shall be used as back-up. Closing shall be stoped by limit or torque sitch depending upon the type of valve. Globe Valve - by torque switch, Gate valve avd others by limit switch and torque switch shall be used as back-up.