Rack and pinion actuators are preferred for operating valves because they offer several advantages over other actuators. They are relatively simple and easy to maintain, with few moving parts. They are also compact, allowing for use in tight spaces. Additionally, rack and pinion actuators provide precise control over the valve, with high repeatability and accuracy. They are also capable of handling high torque loads, making them suitable for use with large valves. Overall, rack and pinion actuators are reliable, efficient, and cost-effective options for valve actuation.
