Introducing Westlock Controls, the global leader in automated valve monitoring & control. For 40 years, Westlock Controls has delivered industry leading valve monitoring and control solutions. Westlock thoughtfully designs products that are engineered to last and equip customers with meaningful diagnostics to deliver desired operational performance. Our valve monitoring and control solutions include on/off valve applications where users can select from leading limit switch box technology or more advanced 4-20mA position transmitters.